B.Y.O.S.S
A rule that says you gotta bring your own stat sheet so you don’t look like a clueless idiot when the game starts. No excuses, no fake stats, just pure embarrassment.
DM: 'You forgot your stat sheet again. I’m gonna have to call you 'Dumbass' for the whole session.'
Player: 'I brought my stat sheet… and my mom’s phone.'
GM: 'I’m not letting you play if you don’t bring your own stat sheet. I’ve had enough of your nonsense.'