1. To bang a girl
2. To have sexual intercourse with a woman.
3. The act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur

to quickly and effectively blow your load whether by intercourse or stroke-job

To knock someone out by punching kicking etc... Or to physically hurt them.

A Hard wank when your'e against the clock

When you have had a stressful week and you take it out on your wife against a concrete wall

to have hardcore sex with someone

In gay parlance, rough anal sex.