1. Your head in a jar, in the fridge prank.
Via instructables.com
Amazing. Full instructions here.
2. Be a chair.
Via imgur.com
3. The belongings-in-the-vending-machine prank.
Via nbc.com
As played out on Dwight in The Office. Bonus if you've got volunteers to purchase the stuff.
4. The classic airhorn as door/wall protector trick.
Via buzzfeed.com
5. The Post-it notes prank. Step 1: cover victim's car with Post-its.
Step 2: Once they drive the thing home, they're in for a bigger shock. Possibly even worth the effort.
6. The old toothpaste-in-the-Oreos prank.
Via youtube.com
7. Desk in the bathroom.
Via nbc.com
Simple, classy, effective.
8. You need this costume.
Via imgur.com
Available from a variety of outlets.
10. Soy sauce and Sprite just aren't Diet Coke.
11. Add baking soda to ketchup.
Via youtube.com
12. Fake head in the bed.
Via imgur.com
13. Mayo in the doughnuts.
Via youtube.com
14. Nicholas Cage calling.
Via buzzfeed.com
Knock, run, win.
15. The insta-date prank.
Via imgur.com
Worth the effort.
16. Office balloon party.
Via reddit.com
The evil prankster fills them with glitter.
17. This, if you happen to be a street performer.
Via imgur.com
18. The wrapping-paper-desk joke.
Via nbc.com
Another classic from The Office. Well played Jim, well played.
19. Make ice cream out of mashed potatoes and gravy.
Via buzzfeed.com
21. Hiding in a box is almost always a winner...
Via imgur.com
22. ...but this is stepping things up a notch.
Via imgur.com
23. Give them a wet crotch.
Via imgur.com
24. Simple shop-window trolling.
Via imgur.com
25. The old planting-cress-in-the-keyboard classic.
Via Flickr: wetwebwork / Creative Commons
You needed to start this one a couple of days ago, but hell, there's no more unexpected April Fool than the one that's running a couple of days late.
26. The joy of toilet trolling.
Via imgur.com
27. And finally, you'd be amazed how effective a gorilla suit can be.
Via imgur.com
