50. Borrow someones cell phone and change the language setting to a foreign language.
49. Change the language for Google on someones computer.
48. Change the coffee in the office coffee maker to decaf.
47. Swap the signs on the mens and ladies rest rooms.
46. Hide scented air fresheners all over someones office.
45. Add food coloring to milk that comes in a cardboard container.
44. Add food coloring to the windshield washer fluid of someones car.
43. Switch around random keys on someones keyboard who isnt a very good typist.
42. Switch the Push and Pull signs on a set of doors.
41. Hide food in a trash can and when someone comes by grab some and eat it.
40. Replace Oreo cream-filling with toothpaste and offer one to someone.
39. Dip the tips of someones cigarettes in Orajel so their lips will go numb.
38. Bring multiple sets of clothes to work, change every hour, and act like nothings different.
37. Cup some water in your hand and pretend to sneeze on the back of someones head.
36. Take something from someones office and leave them a ransom note.
35. Add several odd appointments with alarms set to go off during the day to a co-workers Outlook calendar.
34. Hide all of the desktop icons on someones computer and replace the monitors wallpaper with a screen-shot of their desktop.
33. Put a Please Use Other Door sign on the entrance to your office building if it only has one entrance.
32. Put a balloon on the tailpipe of a someones car so it will pop when they start their car.
31. Glue the headset of someones phone down to the cradle.
30. Take the door knob off a door and put it back on backwards, then lock it and leave the door open.
29. Put plastic wrap around the door frame of a commonly used door.
28. Cover a toilet seat with plastic wrap.
27. Take a squirt gun into the rest room stall next to someone and shoot little drops over the wall every couple of seconds while pretending to pee.
26. Leave a note on someones car apologizing for an accident that never actually happened.
25. Glue all the eggs into the carton.
24. Hard boil all the eggs in the carton and place them back in the refrigerator.
23. Paint a bar of soap completely with clear nail polish so it wont suds up.
22. Turn every setting in someones car to the maximum: the heat, the radio, the wipers, the seats, etc.
21. Place a small piece of Post-it note over the ball under someones computer mouse so that it wont work.
20. Switch the handles on the refrigerator to the side that doesnt open.
19. Conference call two people then dont say anything, just listen.
18. Place a house for sale ad in the newspaper for someones home.
17. Paint the tips of someones pen and pencil with clear nail polish so none of them work.
16. Hide a small radio in the ceiling tiles above someones desk and turn it on very softly.
15. Fill someones hair-dryer with baby powder.
14. Put marbles in the hubcaps of someones car.
13. Leave cryptic notes warning someone of an impending prank then do nothing all day.
12. Rubber band the sprayer on the kitchen sink into the on position.
11. Place a pair of pants and shoes inside the only toilet stall in a rest room to make it appear someone is using it all day.
10. Pour vegetable oil on the exhaust of someones car so it will smoke when started up.
9. Hide an alarm clock in someones bedroom and set it for 3:00 a.m.
8. Remove the shower head and place a Lifesavers candy in it, then put the head back on.
7. Remove the shower head and place a chicken bouillon cube in it, then put the head back on.
6. Rearrange somebodys drawers or file cabinets in a different order.
5. Tape magnets to the bottom of a cup, put it on the roof of your car and drive around.
4. Put food coloring in the hand soap dispenser.
3. Put an ad in the paper for a garage sale at someones house beginning at 6 a.m.
2. Buy some underwear, write a co-workers name in them, then leave them on the floor of the office bathroom.
1. Install the Blue Screen of Death screen-saver on someones computer.