Originating from sixteenth century French sailors, who would spend many days out at sea in poor hygienic conditions. This term is used in the gay community to refer to the instance when one partner does not properly clean their ass before sex.

verb: butt fucking a younger boy in the shower

when a male defecates on a females chest/face as he drags his nut sack along in front of the shit

A muddy snake is when you go in clean but you pull out muddy.

The act of a male inserting his penis into a women's vagina after pulling it out of her anus. Presumably there is fecal matter on the man's penis, which ultimately makes its way to the woman's vagina.

Anus or butt hole

The muddy soup is when having anal sex, little preparation is made before the anal sex resulting in the shit spewing all over the penis of the male.