Top Definition
When you pass a wet fart on someones tongue as they are licking your anus.
I had mexican food last night and I accidently gave Mindy a dirty mudflap.
by Freakshow 1975 September 11, 2006
1 more definition
A righteous ba donka donk butt, the kind you'd just wanna stink your face in between and go BRRRRRRZANG
yobags, did you check the dirty mudflaps on that one?
by Jon Himself March 13, 2003

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