often used to describe sexual relations, but the true meaning is far from that. to be banged is to get properly, and aggressively fucked up on any substance available.
iâm not banged enough, might grab another bag.
"fuckin hell Alfie, you're not a Big Time CEO... you have a tumor on your head, weird teeth and your girl could fuck you up, look at her six pack jesus christ, she's the real big time."