Conversation

My favorite game is to head to a group of game designers, point to a random game, and say "this isn't a real game". Then after about 10 minutes of them bickering back and forth I interject "but games have to have conflict". After another 10 minutes of heated debate I then throw in the piece-de-resistance and ask, all innocent-like: "But what about the fun?"

Usually that last one has to be lobbed as you're running out of the room because the resulting explosion is rather all-consuming.