Top Definition
While a man is having anal sex with a tight woman, he pulls out as fast as he can and the penis creates a suction to the feces inside the anus and the feces come out as well, if done properly in an explosion.
Person 1: Why do you smell bad?
Person 2: I gave some chick a St. Louis explosion.
Person 1: Cool, wanna give me one?
by hastatus3 May 03, 2010

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