dirty muffin 

During anal intercourse, the male will remove his penis and reinsert it in the girl's vagina. The feces on his penis are transferred to the girls vagina creating a dirty muffin.

Last night, I was giving it to her in the ass, then before I blew my load I stuck it in her puss. By the time I was done she had one dirty muffin.

dirty muffin by Sammy Cayman July 24, 2005

Dirty Muffin 

During intercourse, when a woman defecates on a man's scrotum after anal sex; Therefore turning his testicles into a feces flavored snack.

The old man's dirty muffin was devoured by the crack whore.

Dirty Muffin by Allen Schmidt August 2, 2004

Big Dirty Muffin 

A muffin that is big, but also dirty.

Oprah's snack table was full of Big Dirty Muffins.

Big Dirty Muffin by Gentleman, and a Scholar. December 15, 2010

Dirt muffin 

A person or animal that is filthy, but that you otherwise find endearing and love.

Ex. (talking to cat) "Mr. Buttons, what HAVE you been doing?!? You look like a total dirt muffin!!"

Ex. "I love you, but you look like a dirt muffin. Go shower before we go out for drinks."

Dirt muffin by notawombat2 July 21, 2011

Dirtamuffin 

A person thats clothes are really dirty and they wear them day after day until the clothes are gray.

Look at that little boy over there he is a lit dirtamuffin

Dirtamuffin by Kholby Stevenson September 7, 2007