1. You may never date a friend's ex or relative without his explicit permission.
2. You may not torpedo another man's chances with a girl.
3. You are obligated serve as a wingman for a friend, and you will be owed reasonable payment for your duty.
4. You shall provide no information about a friend's whereabouts when questioned by his girlfriend.
5. You must attempt one intervention to stop a drunken friend from cheating on his girlfriend before you are absolved of responsibility.
6. You are obligated to tap your friend when a hot girl walks by.
7. You may not join your girlfriend in badmouthing one of your friends.
8. You must never like your girlfriend's cat, or any other cat.