Top Definition
Universal term to promote something fun or to make humorous.
Want to play volleyball? Smishsmash!
I'm going to nail that chick. Smishsmash!
That sexy chick is a smishsmash!
Man I just failed that test. Smishsmash!
Man I railed that fatty! Smishsmash!
Man we smoked a fatty. Smishsmash!
by hackaxle April 30, 2008
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