B.Y.O.S.S
A rule that says if you don’t bring your own stat sheet, you’re going to get yelled at, cursed at, and possibly banned from the game.
GM: 'You didn’t bring your stat sheet. I’m going to curse you for the rest of the week.'
Player: 'I brought my stat sheet… and my dog. He’s also playing.'
Friend: 'I got yelled at for not bringing my stat sheet. I now hate my life.'