A Southern slang for sex
david was rumping julie last night
To take a picture of a person staring and pointing at a girl's ass, and biting their lower lip. Similar to DAT ASS.
Did you see the picture of Tim rumping that girl?
Jerking off in a public place.
Pee Wee Herman was arrested for Rumping
1) The ass, specifically the buttocks.
I love to grab my woman's rump while we smash!