What is Dirtysack?
A guy that doesn't clean his .....
Testicles
Balls
Nuts
Nutsack
...Therefore has a "DirtySack"
Mike : "Lick mah balls"
Jane lykes : "Fuck off, i am not licking that dirtysack"
Mike : "lol, k"
See nutsack, balls, dirty, nuts, testicles