An adjective used to emphasize how you are feeling or how someone else is acting. Usually a negative connotation.
That guy over there plays football like a buttsack
An impressively flabby and wrinkly ass, more commonly found on seniors, resembling a large nuttsack
Analing a Buttsack would feel more like fucking an airbag than pleasure
A phenomenon in which a man sits in a certain way that allows for his balls to droop down to his buttcrack, so the scrotum comes into contact with the edges of the anus.
Dude, my buttsack is so intense right now, that if I farted, my balls would blow up like a parachute.
(Buht-sahk)
An insult to others, often implying stupidity, craziness, forgetfulness and the lack of athleticism. Many people use it as a joke and call their friends Buttsacks when they forget something such as a homework. Buttsack can also be nice(if it is accompanied by an complement in the form of an adjective)
OMG! Bine! You are such a Buttsack!
By reading this you become an EPIC buttsack.
Buttsacks will rule the world by 2014.
An instance where your nutsack is so loose you fold it into your asshole to keep it from going down your pant legs and when you shit it smacks you in the face,is very common in Asian women
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