Definitions by Crabs are people

Hump and Dump 

Typically in a gay relationship when one participant penetrates the other ones asshole until it has stretched out far enough.
Then he proceeds to shit in the other persons asshole until it's full.

Adam: I'm totally going to hump and dump Jake today.
Faith: Is it Ok if I watch?

Hump and Dump by Crabs are people January 12, 2018