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The act of shoving your fist up one's asshole as to stop the flow of shit. A common activity in the streets of India.
I was trying to go to the bathroom outside, but I got a surpise shit fisting instead.
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by Probably George February 11, 2019
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Repeatedly inserting your fist into one's anus while the victim is shitting.
So I walked into the classroom and found a crowd of retards shitfisting eachother laying fecal matter all over the walls.
by funiek February 23, 2014
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