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The act of laying on your back at the same time propping your ass up against a solid object such as a wall, tree or door so you can masterbate and shoot your own jizz on your face and mouth.
(1) Wow! I walked in to a dressing room at the mall and this dude had his ass propped up pulling off the Missouri snow cone.

(2) Guy (1) Have you ever been to St. Louis?

Guy (2) Fuck you, are you gay? Have you ever heard of th Missouri snow cone? Thats all they do down there.
by Random C October 19, 2009
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