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100 Worst April Fools Jokes

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100 Animals
99 April Fools Jokes
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85 Money Making Schemes
84 Movies
83 Nonexistent Words
82 Not In The Least Bit Sexual Things To Do With No Pants On
81 Nutty Conspiracy Theories
80 Overused Star Trek Episode Plots
79 Pokemon Cash-Ins
78 Porn Stars
77 Quick Detections that an Uncyclopedia page sucks
76 Reasons to Ban Lyrithya
75 Reflections on 2005
74 Reflections on 2006
73 Reflections on 2007
72 Reflections on 2008
71 Reflections on 2009
70 Reflections on 2010
69 Reflections on 2011
68 Reflections on 2012
67 Reflections on 2013
66 Reflections on 2018
65 Reflections on 2022
64 Religions
63 Rejected Harry Potter Novels
62 Remakes
61 Restaurants
60 Self Help Books
59 Sexual Perversions
58 Short Poems
57 Sitcom Catchphrases
56 Songs
55 Songs about Seagulling
54 Songs To Have Sex To
53 Songs To Play At A Funeral
52 Spinoffs
51 Superheroes
50 Things About the '00s
49 Things I Am Not Allowed To Do At Hogwarts
48 Things to do during Christmas
47 Things to Put In An IV
46 Things To Say In Court
45 Things to Say in the Workplace
44 Things to say on a First Date
43 Toys
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40 Uncyclopedia In-Jokes
39 Video Games of all time‎
38 Video Game Movies
37 Video Game Systems
36 Ways of Being a Dick
35 Ways To Be Castrated
34 Ways to be Circumcized
33 Ways to Deliver Bad News
32 Ways to Die
31 Ways to Kill Sarah Connor
30 Ways to Start a Novel
29 Ways to Win an Argument
28 Weapons

Throughout history, April 1 was widely regarded as marking the beginning of the year, until a certain king spontaneously decided it would in fact be January.

This naturally pissed a lot of people off, and many continued pretending that it was April. Thus April fools was born, and resultantly, this article - which attempts to document the top 100 (and more) worst April Fools Jokes, most of which you can get arrested for. Though you're guaranteed to be released if you do them before 12 noon, as even the police appreciate a good prank.

The List

100 - 91

100. Hammering a look-alike car

This involves taking the victim's car and replacing it with an identical one. The replacement car is then smashed up. Alternatively, you can do this the other way round at the same time, as long as the look-alike car isn't yours. Result: very expensive joke.

99. Poisoning their breakfast

Widely regarded as a generally bad joke, since the victim usually dies before you can safely point out that you poisoned their breakfast.

98. A Borax cappuchino

Putting Borax in their coffee has a lovely effect on the look of the drink, and is even more amusing when the victim starts foaming at the mouth.

97. Stealing their credit cards

A time tested joke - you simply empty the victim's wallet of all cards and cash. Then, when out, you will invariably need money, and your victim will thus discover all his cards have been stolen. Naturally, you should only return them once he has cancelled them all.

96. Impersonating the FBI

You and a friend can visit the victim's address, posing as FBI agents. You can then claim that you have logs from their ISP that they have been downloading child pornography, and that you thus have a warrant for their computers. Later, format the computers and return them.

95. Abuducting their children.

For a truly effective gag, simply abduct the victim's children before they enter the school doors. Since you abducted them before 12:00, it is OK to hold them after this time. For maximum effect, return the children just before midnight. It is also even funnier if the children are drunk.

94. Kill their pet

A particularly effective gag is to kill their pet, behead it, and then place the head in their mug. Naturally, you can make this OK by buying them a new pet; "see, it's OK, I got you a new one".

93. Impersonate their doctor

A classic joke is to phone the victim and inform them that their wife has been diagnosed with an airborne strain of HIV, and that they should probably also be tested too. For added effect, tell them that the public must be notified, but they are entitled to free counseling.

92. Get hold of the wild animal they sponsored

Clearly any animal of identical species will do; bring the animal to their door, and inform them that the Zoo has gone into liquidation, and thus, the animal is now their legal property.

91. Break into their house and redecorate

A classic one is to break into their house after they are asleep, and redecorate as many rooms as possible with purple (or striped, vibrant red & blue) wallpaper. Alternatively, you can just drill loads of holes in the walls, and insert a Cadbury's finger in each.

90 - 81

90. Redirect their homepage

Create an effectively done website in the style of Google News, and create a news article that depicts a relative of the victim's has gone on a killing spree and been shot down. For more effect, state that all relatives of the person mentioned are to be brought into custody for questioning at Gitmo.

89. Subpoena them

Write them a letter informing them that their ISP has been subpoena'd for download logs, and that you are resultantly suing them for criminal damages of $54,000,000 relating to piracy, making sure enclose a list of their favourite music artists.

88. Raid their house

This needs to be done just as April 1 strikes (around 2am) - gather some friends and dress in swat gear; one team gas grenades both floors, the other team breaks down the front door and fires rounds into the air, then quickly raids the upstairs and arrests everyone. How far you take this is your choice - some have even recommended live ammunition.

87. Pretend Iran has launched a nuclear weapon at a nearby subpolitical division

Film a mock news broadcast stating that Iran has launched a missile directly at <nearby state/province/department/district> and is believed to be heading for <town close to border>, then simply cut and splice their cable line, run it into your computer and play back when they switch on the TV. Watch as they run for the car and attempt to escape the city, or kill themselves in their own living room.

86. Fake your own death

Fake your death, and then at the funeral, jump out of the coffin. Greater effect can be achieved if you arrange to deliberately fall over when getting out of the coffin, and appear to crack your head open - squibs in your mouth for the "vomiting blood" effect is also recommended.

85. Get a relative to play dead

Get a relative very close to them (perhaps yourself), and harness that person to a light fixture with a belt and leave them hanging there overnight. This is even more effective if the person is fitted so that they are dying when the victim comes down.

84. Get a dead relative to be dead

Exhume the body of a deceased relative, and fit it to the light fixture; this can be especially hard if the body is particularly rotten, so nailgunning parts of the body together can be a wise solution.

83. Wire a stranger into their light socket

Abduct somebody, place them in a chair (don't forget to earth them) and wire them into a light socket. Ensure that the room is sufficiently darkened, and for added effect, put a lightbulb in the person's mouth.

82. The Pregnancy gag

Find someone they've had sex with in the past 9 months (note, if you are reading this, it is unlikely someone will play this joke on you) and get them to phone the other party and inform them that they are pregnant with twins, and that they are the only possible father. Guaranteed to bring laughs for years to come.

81. Put sand in their vaseline

Pretty self explanatory, this one puts a downer on any genuinely good night in with the 'lads'. not only that, but their lips will still be dry too.

80 - 71

Works every time...
80. The Ring of Fire

Probably not your average joke; pour a (generous) line of petroleum around their bed while they're sleeping ad then stand well back and light it, if the noise doesn't wake them, then set their alarm to go off shortly.

79. Vacuum Cleaner over the eye socket

Perhaps one of the most disturbed April Fools jokes of all time; you simply take the nozzle of a vacuum cleaner, hold it over their eyesocket and turn on the cleaner. They now have the tedious task of retrieving their eye from the bag of the vacuum. Usually they find it covered in hair and dust, making it useless.

78. Caster wheels on the Zimmer frame

A gag for the elderly of the family; simply take a standard office chair, remove the wheels from it, and attach to the front and back of the elderly individual's zimmer frame. Hilarity ensues when they lean into the frame.

77. Mace on a toilet roll

Simply take a spray can of mace, and apply it to the outer layer of some toilet paper, allow it to dry and place it back for the next unsuspecting victim. Guaranteed instant laughter (and lawsuit).

76. Bucket O' Acid

Similar to the bucket of water gag, but with a superior twist; simply take a glass coated bucket, fill with sulphuric acid (liquid nitrogen is also amusing) and carefully balance atop an ajar door (note - LN is more conspicuous). Then watch as they run around, slowly dissolving.

75. Cutting the brake line

A time-tested joke; simply locate the brake cable and cut it. For the engineers out there, see if you can attach the now cut cable running from the brake pedal to the accelerator, allowing you to observe exactly when they have floored the relevant pedal.

76. Nitroglycerine Cistern

Disconnect the ball & cock mechanism from their toilet, empty the toilet by flushing, and then *very* carefully pour a combination of nitric acid and glycerine into the cistern. This should remain relatively stable. However, when they flush, a large explosion will of course ensue.

75. Cannabis Incense

When attending your local church, be sure to replace the incense with as high a quantity of cannabis as you can manage. Guaranteed that people will call it their best church sermon ever!

74. Special bread

Following on from the Cannabis Incense, a great follow-on gag is to replace the Communion bread with LSD tabs - although church-goers need to have been sufficiently stoned for this to work. Otherwise, it may be simpler to merely spike the communion wine instead.

73. Encyclop*dia Dramatica

A hilarious April 1 gag is to gather some friends with spare bandwidth, and simply DDoS ED for as long as humanly possible, in fact, doing so past 12:00 is actually totally fair game.

72. The Punji pit.

Works brillianty if done beside their bed, or at the exit to a doorway; you need to dig out a pit in the floor (create a base for it) and then fill it with sharpened punji sticks. when they awaken (or leave the room) they will immediately be hilariously skewered on the trap below, occasionally this does not kill instantly, and can provide hours (possibly days) of visual amusement.

71. Medication Switch

Do you know somebody with a life-threatening condition? yes? well, the perfect April Fools joke is to take their medication, and simply swap it for menopause pills, or vitamins, this is the perfect chance to experience exactly what they look like when having a critical seizure: note, after 12:00 you must call the emergency services, but you're free to do what you like beforehand.

70 - 61

70. The 'someone's trying to kill me' gag

When your friend is out driving, simply tail him, and have a friend start firing shots at his car as he travels down the motorway. Attempting to shoot out his tyres as he turns can be especially effective since the car will often flip, totalling their vehicle, seriously injuring them, and also allowing you to end the chase and tell them it was all an innocent prank.

69. The Regex Gag

You collect up all their work documents, and regex them with [0-9][A-Z] -> A (case insensitive) or alternatively program the printer such that it does this automatically.

68. The Shredder Gag

You gather all their work documents and throw them in the shredder. This is especially effective if April 1st is the day before your friend has to give in an important document to his boss.

67. The Moving Day Gag

Tell your friend that you're moving 50 miles away from town. It's up to you how far you want to go with this prank. I suggest that you hire a moving truck and a mover or two however.

66. The Fake Eviction Notice

You print up a fake eviction notice from the city and give it to your friend. Tell him he has 24 hours to pack everything before they kick him out. The rest of this prank should handle itself. Be sure to only tell them it was all a joke when they have already packed everything up.

65. Hair Loss Tonic

Using a mirror, reverse the chemicals in hair tonic. Then slip the newly created hair loss tonic in your friend's coffee or other kind of drink. Afterwards, apologize and offer to buy them a wig (get them a cheap wig).

64. Break the Windows

Throw rocks and bricks (if you can carry them) into the windows of your friend's house. Then apologize to him and offer to buy them new windows. Then break all the windows they're selling at the store so they have to pay for them.

63. Fake Suicide

Leave a suicide note where someone will find it and then leave your house for the day. An open medicine bottle or a coiled rope add an extra touch. Be sure not to let anyone know you're alive until after the police have been called.

62. Coming Out of the Closet

Announce to your family or friends that you are gay and have been in a long-term relationship with another person of the same gender. Alternately, if you are gay, tell them that you are straight.

61. Public Indecency

While out in public, kindly offer to buy your friend a drink, after you have purchased the drink (an order to-go would be recommended) simply slip a few sildenafil citrate (Viagra) pills into their drink, and observe with much hilarity as they attempt to hide their erection (note, again, if you are reading this, it is unlikely that you would suffer from this gag; the erection would need to be visible)

60 - 51

...classic.
60. The Bottle trick

Pick up a glass bottle, and smash it over their face, it's a fun thing to do!

59. The tabasco down the pants

A great followon from the Bottle trick; simply grab the bottle of tobasco, and pour it down their pants, guaranteed to bring them back to consciousness immediately!

58. The 'I was framed' gag

Pay a visit to your victim's place of work, and simply murder a colleague of theirs (preferably their boss) as brutally as possible; then simply remove a limb (bringing a hacksaw or chainsaw would be wise) and put it in your friend's fridge - next, simply call the police and explain how you just went to your friend's place of work, and discovered a dead person with a missing limb, and that your friend asked you not to come round his house. Guaranteed satisfaction!

57. The 419 gag

Simply send your friend an e-mail claiming you are a rich prince with around $2,000,000 in withheld funds, and that you need their assistance in claiming the money, and that for the initial sum of around $20,000 you'd give them more than ten times that in return - this gag is so popular it is in fact used all year round.

56. The Messiah gag

Attempt to convince everyone that your victim is claiming that he is in fact the reincarnation of the messiah; taking past experience into account, your victim will likely be a receiver of a side-splittingly funny crucifixion, or at least a vicious beating.

55. The John Bobbitt gag

If you find yourself in possession of a tranquiliser gun, then simply take aim and fire at your chosen victim, then enjoy yourself as they briefly stagger around before passing out, then take a sharp knife, and cut off their penis. (prerequisite: victim must be male)

54. The Conception gag

Poke holes in their condoms. (There is debate as to whether or not this falls under the worst, or best joke, as the results can be quite funny).

53. The Constipation Gag

Using a mirror, reverse the chemicals in laxatives. Then slip the Shit Blockers™ inside your friend's food. Then pretend to give him laxatives, only to give him MORE Shit Blockers™.

52. Change the Year

Change the year on your friend's computer so that it says 1900 instead of 2006. Rewire the monitor cable to feed the same signal into all three of the RGB colour inputs... in black-and-white. They'll think that they've fallen for an retroactive Y2K Bug. Further to that hack their computer's DNS table to direct to a customised news site that states that the Y2K bug has caused the US missile defence system to fire a bioagent at the homeland; detailing the particularly evil virus contained within. Most will run to the nearest window and jump, but you may want to give them a little push otherwise.

51. The shaving foam & razor blades

Simply wait for your friend to fall asleep, and create a large pile of shaving foam in their dominant hand; now, slide razor blades (preferably at a 90 degree angle) into the shaving foam. take a feather, and apply it just below their nose, this should cause them to reflexively bring their hand to their nose; covering the face in foam and also slicing into both their face and hands thanks to the brilliant addition.

50 - 41

50. The fake cigarette

If you have a friend who smokes, then a favoured trick is to take a cigarette and very carefully inject the fluid from a cyanide pill down the shaft of the cigarette (using a hypodermic is advised)

49. The Chuck Norris Gag

Tell your victim you want to scare someone, and that you'll pay them to pretend to die when you do a roundhouse kick to them, however, when you do the kick, you need to stab your foot into their throat, this should snap their neck and means you will genuinely kill them, and they weren't expecting that; April Fools!

48. The Disease

Simply find someone (perhaps yourself) whom you know has an infectious disease (sexually transmitted ones are a must) and take a swab sample from the affected area, now, simply take the swab and wait for your friend to fall asleep - slowly slide the swab into their anus, give it a 360 degree twist and slowly remove again, after 12:00 you can tell him to get himself checked for HIV.

47. The amnesia gag

Arrange to meet your friend in town or public place, preferably a restaurant. Make sure you arrive before them, and when they see you, pretend not to recognise them and walk away, they will of course follow you, have them follow you into an alley, and then give them a final warning. After this (whether or not they respond) take out a gun, and fire two rounds into their kneecaps, if you don't have a gun, a machete used in the same area will suffice.

46. The hand reversal

You might need to give your friend a lot of sleeping pills just enough not to kill him/her. When your friend is in deep sleep, get a chainsaw, cut both hands off, swap them and sew them back on before all the blood drains out - laying down newspaper beforehand is probably a good idea. Observe the shock and agony on their faces as they regain consciousness.

45. The multiple hand reversal

Repeat number 46 but on several friends by mixing up their hands.. Makes sure they have the same blood type (or, entirely different blood types if you're so inclined).

44. The second-hand store

While your victim is sleeping, remove their hands and pawn them at a local second-hand hand store.

43. The Persian carpet gag

Declare that Saddam has WMD's and send your army to invade Iraq. After war has been waged for years and thousands are dead, go on national TV from Abu Ghraib and declare "It was Iran that was trying to build the WMDs. APRIL FOOLS!" and promptly march all of your surviving troops out of Iraq and into Iran. Be sure to have plenty of cameras at the ready as the look on Cindy Sheehan's face will be priceless.

42. The toilet gag

Go to the toilet. Take a piece of plastic wrap and place it under the toilet seat add a few blobs of caesium to the sheet where it doesn't look particularly noticeable. Now wait until someone goes to the toilet.

41. The other toilet gag

Go to a friend's house. Use their bathroom. Completely clog his toilet. Show no mercy. Poop and poop and poop, and use lots of toilet paper. You can even put a wash cloth down there - hell a small child is even better. Then leave the bathroom and tell your friend that someone clogged it and ask if he has another you may use. Repeat on new toilet.Note. may require use of exlax

40 - 31

40. Yet another toilet gag

Find a toilet, preferably not your own. Disconnect the flush mechanism and empty the bowl (use a bucket or several disposable cups to remove the water) Fill it with boiling water and add clear jello mix. Stir. Let it cool overnight (make sure no one uses it until it does). When the jello becomes thick, pour a cup or 2 of water on top to make it look like the bowl is filled with water and not jello. Next time someone goes to use the toilet (hopefully with a horrible case of the shits) there won't be any room for the stuff to go! Hilarity and a huge mess ensues.

39. The swap-the-dilithium-crystals gag

Any manic-depressives in the house? Swap the lithium mood stabilisers with Lithium-Ion battery cells and watch everyone go wild. They'll stop once their batteries finally run down.

38. The exploding Pinto gag

Found a Pinto still on the road? Remove the brake lights; replace them with blasting caps to detonate the vehicle the moment the victim hits the pedal. Convince the next of kin that the result is their fault for not electing Ralph Nader for President.

37. The exploding space shuttle gag

A variant of the Pinto gag, this requires that you buy a used space shuttle (available at government surplus auctions or army/navy stores) and some broken O-rings (pulled from the exploding Pinto, above). They get in and try to launch... **BOOM**

36. Talking Toilet

Tape a walkie talkie to the base of your friend's toilet. They'll think they have a talking toilet. Don't tell them it was just a prank until they have already tried to sell the toilet for money.

35. The Insect gag

While the victim is sleeping, take a flesh-eating insect (scarab beetle is an obvious choice) and insert it into their ear. Watch as they hilariously try to tear their own head open to get out the creature that is devouring their brain.

34. April 2nd gags

Whether the prank is funny or not, it really shouldn't matter that you're a day late to the party. Better to fool them when they least expect it.

33. Distribute "their" porn

First, find the sleaziest porn you can (hint: internet/usenet) - generally porn that is contrasting to their supposed sexual orientation is preferable, then get some mailing labels. Write their name and address on the labels, then attach them to the porn (hint: make it appear to be a marketing related promotion for a new Business venture of theirs). Next, distribute it at schools, doctors' offices, etc. If you are caught, just tell the cops that you were paid to do it.

32. The 'Goldilocks' gag

Replace your bratty siblings' teddy bears, paddington bears and pooh bears with real live grizzly bears. If anyone notices anything out of the ordinary, play really dumb and pretend not to know who (or what) has been eating all the porridge, breaking all the chairs and getting rid of unwanted bratty siblings.

31. Sunny Delight

Dilute your younger brother's orange squash with vodka, claiming it's a new brand. Imagine his amusement when he comes-to, aged 20, lying face-down on a motel bed in Tunisia with a pounding headache and a lewd tattoo of Thatcher on his left buttock.

30 - 21

30. The good ol' "I'm pregnant" trick

This is especially useful if you are a female and known to be quite, ahem, productive. Say, you've had 4 already, then say, "(Husband's/Wife's name), did you tell them the news?". Then have your spouse act as if to say "you tell them". That will do the trick. Remember, the more kids you have already, the more believable the joke.

29. The guy in the trunk gag

Firstly, scope out somebody you think is within your means to abduct, then do so, and hide them in the trunk of your victim's car. tell your friend you need to go out for a drive for something *urgent* and get him to take you onto the interstate. when you find yourself near a police vehicle, immediately grab the wheel and cause the car to swerve wildly. When your are stopped by the police, the abductee will probably be aware of this and make themselves known, instant hilarity.

28. Offer to pay the national debt

Simply get the number of the highest level of official in the white house, and impersonate Bill Gates, usually, if you pull this off correctly with a variety of well-worded facsimiles, you can effectively convince the administration that you are indeed going to solve their problems single-handedly, naturally, the humour is in telling them that you're actually not going to.

27. Publish 'their' diary

If you happen to know that your friend keeps a diary, then take a peek at it, although if you can't, no matter; simply concoct any number of deranged theories, lies and disturbed comments, and them publish them in the form of a blog. now simply phone your local hospital and explain you are worried about your friends recent behaviour, and give them the URL to the blog you created, generally you need to time this so that they are sectioned on April 1st, which can be something of a challenge.

26. Icy Hot in a Condom

Wait until one of your friends is drunk and about to get laid. Then, offer to get them a condom. Fill it with Icy-Hot and give it to them. Watch them sober up REAL quick.

25. White House Tea Party

Actually Attempted! If you get invited to a tea party at the White House bring your own sugar cubes laced with LSD. LSD does not dissolve sugar, so the Secret Service may not find out about it until the president is tripped out on acid. (Warning: This prank could result in the president believing that there are WMDs in places there are not.)

24. Releasing rabid dogs in their house.

One of the funniest yet tragic April Fools' Day jokes is to let rabid, starving dogs into their room (or the room of a small child, you decide you sick weirdo.) and enjoy as they are ripped to shreds. (Note: After 12:00, you should alert the police that there's been an "accident")

23. Replacing the salt with potassium shavings.

Sure, everyone loves salt on their fries. But what if their fries begin to burn and explode? Well, then you have hilarity! Simply grind down potassium, avoiding any sparks or sources of water and mix into their salt. When added, it will burn uncontrollably! For extra laughs, put a second helping onto the rim of their margarita!

22. Rigging their pregnancy test.

Replace the testing strip inside their pregnancy test unit with litmus paper. Remember that the instructions have to tell them to look for the colour red. Wait til they're on the abortion table, then text message them!

This is exceptionally more amusing if done to a male.

21. The helmet gag

Take a walkie talkie and tape it in a helmet. Dig a little hole in the garden and put the helmet in the hole. Now say something in the other walkie talkie. Everyone will think there's someone in the helmet! Hahaha!

20 - 11

Have a friend who's wheelchair-bound ? Well with this clever gag will have you both laughing for years to come!
20. The library joke

Go to a library with a couple of friends and take a lot of buckets filled with water with you. Enter the library. Now make everything wet!

19. The 'cat in the car' gag

Go to your neighbour's garden and steal their cat. Now go to their car and put the cat in the motor. Make sure it can't escape. Wait until they want to use the car and the laughing can begin!!! Tip: you can also do this with a dog.

18. The movie gag

Tell someone you want to go to the cinema with him/her. Say he/she has to be at the cinema at 7 p.m. Stay home and call him/her three hours later to tell him/her it was a joke.

17. Kill someone

Just go up to a friend, acquaintance or family member and simply begin to kill them. As you are killing them, on their last breath whisper "April Fools!" The person will laugh right as they die, which is pretty awesome and you will have an excuse when you are in court.

16. Surprise Sex

Go to your local unscrupulous chemist, and acquire some Rohypnol, then simply drug your victim's drink of choice with it, and wait for it to take effect. At this point, you have a choice, however, you should (eventually) proceed to place them in a ditch, preferably with no underwear on, later you can inform them it was merely an April Fools joke.

15. Blow up their House

Find a friend who is a smoker, sneak into their house at night and loosen their gas pipes. Make sure it will be several hours before they have to have a light. Hilarity ensues when they try to have a smoke and their house explodes. Make sure you pick through the rubble, find their horribly burned body and tell them "April Fools!"

14. Steal their kidneys

Get the victim really really drunk, so much that they pass out. While they are out, get a knife (You can usually get one from the bar you are drinking at, don't worry about cleaning it) and cut out their kidneys and sell them on the black market. (Note: No actual medical practice is required to remove someones kidneys.) Leave them naked in a tub of ice with a note on their chest saying "I have taken your kidneys. Call an ambulance. APRIL FOOLS!" You can also offer to buy them some new kidneys for their birthday/Christmas/barmitzfah

13. The CD Ejector.

Does your friend have a CD drive with the disc slot? yes? well simply take the drive apart, and connect the lifting mechanism that raises the spindle to the spin down motor instead, this way, instead of the disc spinning down when they eject the disc, it will fly out of the tray at high speed, and embed itself roughly 2.6 cm into their head.

12. That is deodorant... right?

While in friend's house snatch their deodorant (roll-on) and remove what's left of it. Fill it with cream cheese or just plain cheese and mold it in the empty deodorant space. Put the cap back on and invite yourself to sleep over their house. In the morning (hopefully they put deodorant on when they change) you can laugh your ass off. You can also use any sort of white substance.. Use your imagination.

11. Destroy PC

Purposely wait for your friend, if a computer nut, to leave the house or go to the bathroom, from which you open the cd drive and remove that elastic that enables the drive to open in the first place. If no elastic, just put a hammer of some kind in the monitor and tower. Sledge hammer has more devastating and more funny effects. Make sure the PC is unplugged to prevent Electricution.

10 - 1

Does this really need an explanation?
10. Stealthily crush up Ecstacy pills and put it in their drink.

brilliant fun, usually makes them feel like everybody loves them, or alternatively, they can consume too much water and die, or just die outright, either way, it's generally considered to be a classic joke.

9. Have sex with their Mom

Have sexual relations with their mom, no matter how disgusting, and purposely invite them into the room while in the middle of a very reveiling position. Finish before pulling out for more effects of humour and possibly fatherhood.

8. Hack their Wikipedia Account

Useful to make them edit and contribute volumes of information about articles that they would never think of even reading. Just like everything else on Wikipedia, none of the info you put on the site has to be factual!

7. Sign them up for the Army

Laughs all around when the MPs show up at your mark's door and he gets hauled off to the stockade for going AWOL.

6. Edit their page on Wikipedia

This works best if they are somewhat famous. Just put up what ever you fell like and nobody should notice it for months. If they are not famous, just give them a page (using their account as above), and laugh all around when it's put on AFD and your mark is banned.

5. Force them to watch Danny Phantom for 5 straight hours.

If you duct-taped them to the chair, it's even funnier.

4. Glue a scream mask to their face

This works especially on camping trips to places full of skeeters.

3. Weld a scream mask to their face

Very amusing! usually doesn't weld particularly well, but the fun is in the trying.

2. Say that it's 1979.

Get loose and go retro, I say! To make this work, knock your mark unconscious and bring him or her to a 70's throwback disco. Lots of fun, especially if you manage to get your mark to go streaking, or hooked on cocaine, or watch Brady Bunch reruns, or what ever weird 70's fads there are.

1. APRIL FOOLS!!!

Construct a fake list of the worst 100 April fools jokes, and then find someone stupid enough to read them all the way down to number 1.