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!"