by Mike April 16, 2003

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".
by Dr. Thiccness August 23, 2018

by Jason_Spaghetti January 7, 2021

Basically, it's a combination of the words ballsack and butthole. It can be used in place of either words, but doesnt have the same definitions as those words. It's used as an insult, with added emphasize on butt or asshole and ballsack. It's like calling someone a ballsack and butthole at the same time.(NOTE- symonms for butthole and ballsack can also be emphasized or used) ex.- ass-sack. Another way it's used is as a curse, like damn.
Doushe 1 - You butthole!
Doushe 2 - Oh yeah?!? Well, you're a ballsack!
You - You know what?You're both buttsacks!
Ex 2 - class, we have a test today! You - Oh buttsacks!
Doushe 2 - Oh yeah?!? Well, you're a ballsack!
You - You know what?You're both buttsacks!
Ex 2 - class, we have a test today! You - Oh buttsacks!
by 1gr8beatle May 5, 2011

When you fuck the boys in the asshole and the anus residues stick on to your dick and you can't remove the shit specks and bloodstains. Symbol of love.
by #mynamejefe May 10, 2020

by Buttsack Lover October 21, 2011

When two guys are having sex, and the giver jams it into the recievers butt, making him look like he has a ballsack on his butt, Thus a buttsack.
by William Polebiter April 6, 2008
