Another paper punch-hole trick that is even better is to take a plastic 35mm film canister,

Another paper punch-hole trick that is even better is to take
a plastic 35mm film canister, paper punch-holes and a can of freeze
spray (at fine electronics stores everywhere). Fill the film canister
with about 1/4" of freeze spray then add punch-holes until the film
canister is at least half full, replace the lid on the canister, set
the canister on a desk or shelf and then wait for the fun. The neat
thing is that when the canister pops it shoots paper all over the
area (sort of like a party 8-)). Before you try this with the con-
fetti, experiment with just the freeze spray and canister, different
amounts of liquid causes it to pop at different times.
I know one person who filled one of those blue solder extractor
bulbs half full of freeze spray, sealed the end and put it under his
bench at work, he thought it might make a pretty good pop and after
30 minutes had completely forgotten about it. It went off about ten
minutes later and could be heard all over the building (he later told
everyone that a power supply had blown).
Bubble pack behind the wheels of an occupied chair also causes
some fun when the unsuspecting person rolls back.

Actually I'd rather hear mind game type jokes which are
a lot more fun. ex:
Bet some one they can't eat a slice of bread in less than a
minute. Conditions are, nothing on the bread and nothing with the
bread (like water). There are people who can win the bet, but
watching them suffer is worth loosing, and I have won more money
than I have lost.