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When you don't wipe quite good enough, and you're left with that greasy, dirty, sweaty ass-crack feeling. Especially common on hot and humid days.
Joey was too lazy to scrub his ass properly. Now, he's running around with a hot, sweaty, and uncomfortable moist and greasy film irritating his ass and screwing his whole day up. This condition is known as slush butt
by Plazmabat January 11, 2009

Words related to Slush Butt

ass butt greasy monkey sweaty