If you haven't, the game is still quite simple. At the start of each round, a randomly-generated acronym is shown. You have a certain amount of time to make up what it might stand for. Usually the funnier it is, the better. After everyone has submitted their "de-acronization", all of the answers are displayed, and the players vote. The winners gets awarded points.
For example, let's say our acronym was BAC. Some answers could be "Beating Annoying Children" or "Bums Are Cool". You get the idea.