One of the hallmarks of a truly classic prank is focus. When you're a kid, it's fine and dandy to pull out the generic japes - dunking somebody's hand in warm water so they pee their bed at summer camp is ubiquitous, sure, but it's even funnier if your victim has just gotten over a particularly shameful streak of bedwetting. Office pranks are no different. Learning a little bit about your victim can give you inspiration to carefully craft your assault, whether it be phobias, dark secrets, you name it. Before you pull the trigger, make sure you carve a name on that bullet.