When your girlfriend or boyfriend hasn't shit in a week and then you fuck her in the ass. It works just like a plunger.
by Blaaken January 2, 2012
Get the Mud Up mug.Getting sodomized. Used frequently in conjunction with being incarcerated. Although the term infers aquiesence, it is most often due to the threat of violence.
Johnny never learned how to deal with bullies in school so when he went to jail, he was forced to give up mud.
by krept July 26, 2006
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Mud Up • give up mud • Up Mud • mud flap • MUD • Mud slide • mud shark • mud butt • mud cricket • mud pie
"I went up mud"
"She likes it up mud"
"Hi Dave, did you go out last night?"
"No, I stayed in and went up mud with my darling wife."
"She likes it up mud"
"Hi Dave, did you go out last night?"
"No, I stayed in and went up mud with my darling wife."
by MickyHow September 18, 2013
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