Definitions by Dr. Thiccness

Buttsack 

A buttsack is when you ballsack is dangerously close to your anal cavity, or butt, causing a mutation in between the butt and sack also known as buttsack (can be abbreviated for butsac or "bs".

Ew you smell like a buttsack

Brb gotta wash mah balls, smells like a buttsac all up in this bitch

Buttsack by Dr. Thiccness August 23, 2018