Butt-Cuss 

(1.)The act of farting. (2.)Farting In such an unspeakable manner.

or (3.)farting very loudly in a quiet environment.

1. dude whats that smell? i just let out a Butt-Cuss! ahhhh sick!!!!one11!1!!11eleven!1

2. I told you its unspeakable.

3. kid 1 "(butt cussing loudly)" librarian "shhh no butt cussing in the library! you fail at life! now take you pants off and bend over!"

Butt-Cuss by thebuttholeM4st3r July 3, 2009

ButtCussion 

ButtCussion: Severe fall landing directly on one's posterior axis, causing severe pain to the point of nausea - as in a "concussion of the butt." Falling and landing directly on the gluteus maximus or worse, a direct blow to the coccyx, with pain so severe that it causes concussion-like symptoms.

He jumped up into the air over the frozen swimming pool, cannonball-style with ass pointed down and knees up, thinking the ice would break and he would polar bear it but the ice did not break - Total Buttcussion!!

ButtCussion by AWarrenP November 8, 2012

buttcuss 

Nothing. No substance

He’s got buttcuss

buttcuss by anonymous November 7, 2020