The act of licking or sucking an asshole clean.
"Did you hear what John did to his boyfriend the other night? He was a total mud mouth! I just can't believe it.'
by Somthin Somthin March 03, 2011
Top Definition
mud mouth is obtained by taking a shitty dick straight from your ass into your mouth th finish a man off.
did u give her mud mouth? hell yeah i did, sh was a gooood girl
by gato September 11, 2003
When you've been out in the desert so long that you accumulate mud in the corners of your mouth caused by dirt accumulation and sweat.
You've got some pretty serious mud mouth going on man. We should probably go home.
by Judicium May 19, 2015
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