1. Anal sex, or other anal stimulation of a sexual partner by another. Can include methods such as digital manipulation, oral stimulation, or penetrative sex.
1. That chick is so drunk, she'd let you start bum poking her, man.
2. James gave me a vicious bum poking last night. It hurts so bad to even wipe my pussy after i pee, I really am not looking forward to having to poop.