Sing Ass

When you fart and clench your ass cheeks it makes a whistling sound

I did a sing ass and my family thought I was whistling

by J0$HÜÅ November 14, 2016

singing his ass off

Refers to a singer who has a flat voice or regularly wanders off key.

Guy 1: Let's go to The Station tonight.
Guy 2: Oh man. I can't take that band that plays over there. That little short dude's gonna be singing his ass off and I'll be cringing all night long.

by exitflagger May 6, 2008

Sing Ass

When you fart and shit at the same time.

Yo my dude, I just did a sing ass in the bathroom.

by questionman2468 November 3, 2016