MPS(Mud Puddle Submarine)- While dipping on Copenhagen, you spit on the girls ass hole making a small puddle and then stick your dick in her ass, as if a submarine was submerging underwater.
"Last night I MPS this random snaggle cause she didn't have KY"
by stevenson bitches dot com September 11, 2007
Verb. To goof up. To make a complete fool of one's self.

Noun. An idiot or a goof. One who partakes in stupid acts.
Matt: So I was trying to catch the ball when I mpsed and ran into a concrete pole.

Nicholas: Wow. What a total MPS!
by Important man February 10, 2003

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