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an adjective for something that is ridiculously awesome. describes a level of coolness that is reserved for fruit snacks, pepperidge farm snack sticks, mr.Pibb, and RedVines.
Trevor- "hey guys, my mom made us an after school snack!"
Cornelius- "snacknasty!"
by Kirsten Strandjord June 25, 2008
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When your wife takes a dildo up her ass and pussy while you jack off on her face.
Man...I gave my ole lady the Snack Nasty in the front yard last night.
by Kitty Miss August 15, 2014
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