This office prank—probably created by Satan himself—is so evil that it would make me punch the screen. Heck, even the Dalai Lama would get a hammer and destroy his computer, foaming at the mouth. Watch how to do it.
This video shows that, when you work in a laboratory, inoffensive office pranks can turn into brutal weapons of selective destruction and contusion. Like this insane pneumatic cannon. This is how they say they did it: