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A sex act that usually involves a fat fetish. The (usually) female obese participant sits on the ground naked or otherwise, while one or more male participants proceed to manually stimulate themselves while walking in a circle around the person in the middle. They then proceed to cum all over the obese participant in the middle.

similar to bukkake except for the fact that it only requires one person to spank the monkey as opposed to multiple participants
A play on words derived from the children song "She'll be coming around the mountain",
"How are things going with that fat girlfriend of yours?"
"pretty good man, over the weekend we got busy and she let me cum around the mountain"
"man that shit is disgusting!"
by GoYaffa April 28, 2008
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