a guy at work had his girlfriend send him that. him and 2 others went through the list and worked out i'd actually done half of it
However, it is missing other things i have done:
1) fire smartie lid frfom tube so it skims colleague's head and lands in their coffee
2) rearrange the initials of someone you're talking to (excellent if you come across Friar Tuck or Betty Swollocks)
3) sing/dance to the printer/fax machine
4) do leg raises on desks/partitions while having important discussion
5) put hole punch circles inside someone's umbrella. next time they open it, they will cover his head
6) tape everything on the desk - phones, mouse balls, keyboard buttons
7) turn everything on the desk UPSIDE DOWN (including things in drawers/containers)
8) if your boss says your tie's not done up, ask him what the bloody point of a tie IS?
9) moo at customers/users
10) (NOTE: I HAVE NOT DONE THIS) - squeeze boss's arse - specially daring if they're same gender
11) fire ring pulls from cans and try for distance
12) have a mushroom shaped ornament on desk - if someone asks what it is, tell them it's a butt plug
13) snore in a floor/board meeting
14) (NOTE: I HAVE NOT DONE THIS EITHER) - have a framed pic of your work colleague's wife/sister/mother/daughter on your desk
15) break wind in a meeting and give it a rating for noise and toxicity
16) come in and tell your colleagues you want to be called Jennifer (if male) or John (if female)
17) mock-hump the back of your chair
18) mock-hump the back of someone else's chair
19) mock-hump the back of someone else's chair while they're SITTING in it
20) in answer to "why did you do that?":
GOD TOLD ME TO DO IT
MUM TOLD ME TO DO IT
or my personal favourite:
YOUR MUM TOLD ME TO DO IT
there are others but we have kids on the board