Top Definition
Used when something is very bad, gross or horrible.

"Dude that movie last night was poop nasty."

"Your poop nasty for banging that girl last night"
by water ib September 02, 2008
adj. connotating the negative sense of nasty; disgusting; ant. sweetnasty
Oh man, your face is poopnasty! Not like Christian McBride's "Kind of Brown" which is sweetnasty!
by mmmtasty May 02, 2010
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