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A phenomenon caused by pulling out too fast during anal sex which causes a vacuum which then sprays the fecal matter out of the rectum at a high speed.
My parents walked in on my boyfriend boning me in the ass and he pulled out really fast causing a Zimbabwe Swamp Cannon spraying shit all over his junk. It was so embarrassing he broke up with me.
by Trapmaster Crouch January 19, 2009
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