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When two people put their asses together so that their assholes are as close as possible then one shits into the others asshole. Then the other person pushes the shit back into the others ass. And the two do so back in forth for the reason of having fecal anal sex. (does not work if you have the runs)
Dude, I totally caught those two chicks doing an Alaskan Light Switch!
by Dirty Dirty 420 July 21, 2009
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