Definitions by Sexylukeboi

Uwoo 

The sound a male makes when another reaches under their ass and grips that males balls tightly.

John let out a mighty "Uwoo" when Sydney tightly gripped his nutsack in her hand from under his ass.

Uwoo by Sexylukeboi October 2, 2018

shack in the back 

A woman's giant ass

Damn she got a nice SHACK IN THE BACK!!

shack in the back by Sexylukeboi January 13, 2018