I'm starting a law thread where you create gaming rules based on your personal experiences or watching others; it's a simple concept and inside jokes are welcome (but leave the name of the game where the joke is from if you do please :P).
I'll start:
A law of survival horror games: WHEN YOU ARE BEING CHASED, DO NOT, UNDER ANY CONDITIONS, LOOK BACK.
(4:24 is best part for reference ;P)