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(n) A sex act which involves someone with diarrhea engaging in receptive anal sex. The removal of erect penis causes a rocket of liquid feces to stream out of the person's asshole. Considered VERY gay in Trinidad.
Roger: What's the number of a good carpet cleaning service?

David: Why?

Roger: I gave this girl a mud volcano last night and there is shit everywhere!

Selfish Michael: Gross!
by Room'd July 03, 2011
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