Poo in a bag flung around by chimpanzees. Often said when around African Americans, Jews, and big gay black men. You might say this when you are upset or something wows you.
Nasty sacks man, theres a black man on the front of the bus!

Nasty sacks, I forgot to rape that one pregnant women!
Nasty sacks, I forgot to pull out!
by TitusgotbigDICK August 14, 2018
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A term used to describe the sexual act of dipping one's own nutsack into a toilet filled with bean burrito-induced diarrhea, and then allowing one's sexual partner to clean the fecal matter off of the scrotum using their tongue.
"Come on, nasty sack!"
"I still can't get the taste of Gud's diarrhea out of my mouth. He gave me a nasty sack last night."
by niggityniggle June 17, 2020
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