Top Definition
A sexual act in which one partner defecates into the other partner's mouth. Shortly after, vomiting will ensue. Whilst the "bucket" if firmly held shut, the first partner then fucks the other's mouth.

Once completed, the "bucket" will consist of Shit, Vomit, and Semen.
Dude, I took home this nasty girl last night, and you know what ?? I turned her into a mississippi mudbucket.
by Poop ! May 23, 2008
5 Words related to mississippi mudbucket

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