The Rules of Fight Club

1. You do not talk about Fight Club.
2. You do not talk about Fight Club.
3. Someone yells, ‘Stop!’ The fight is over.
4. Only 2 guys to a fight.
5. One fight at a time, fellas.
6. No shirts. No shoes.
7. Fights will go on as long as they have to.
8. If this is your first night at Fight Club, you have to fight.

As elucidated by Tyler Durden (AKA Hobbes of Calvin and Hobbes):