Fight Club Rules

Gentlemen, welcome to Fight Club.
The first rule of Fight Club is: You do not talk about Fight Club.
The second rule of Fight Club is: You do not talk about Fight Club.
Third rule of Fight Club: Someone yells "Stop!", goes limp, taps out, the fight is over.
Fourth rule: Only two guys to a fight.
Fifth rule: One fight at a time, fellas.
Sixth rule: No shirts, no shoes.
Seventh rule: Fights will go on as long as they have to.
And the eighth and final rule: If this is your first night at Fight Club, you have to fight.