You don't know the rules? There are unspoken rules of conduct amongst civilized men. If you don't know them, then you are not a real man:

- You never insult a man's mother
- You never insult a man's wife or girlfriend
- You never emabarrass a man in front of aforementioned women
- You never embarrass a man in front of his children
- You never tell a man you want to bang his sister

Of course when dealing with lowlifes... all bets are off...