Definitions by BHS Master

Muffler Flap 

When your inside a chick and your ball sack covers her butt hole as she farts, causing your ball sack to vibrate acting like a muffler flap.

I hate when my wife uses my ball sack as a muffler flap!

Muffler Flap by BHS Master September 9, 2019

BHS 

BHS - Butt Hole Stuff

Friend 1: What did you do last night?
Friend 2: BHS

BHS by BHS Master January 1, 2017