Definitions by Hugo N. Foqursilf

Ass buckle 

An "ass job", where a guy fucks a girls ass cheeks, without penetration, and in order to increase friction the girl will lower her belt down around her ass to squeeze her ass cheeks together to make it more pleasurable.

She put on the ass buckle for me and I was done!

Ass buckle by Hugo N. Foqursilf December 7, 2015