mud flaps are the lips lining the pussy, a good example of mud flaps that are easily visible would be a hot asian chicks.
by dave(Dream team) January 27, 2005
by Politricks November 27, 2003
by gdude April 13, 2009
Sagging butt cheeks with age and weight loss such that a pencil could be held in the crack between back upper thigh and bum. Vastly superior to all alternative definitions for the sheer ubiquity of the phenomena but also because legs are the human equivalent to wheels and human mud flaps are therefore perfect homologues to vehicular ones. Entered Urban lexicon in Spinal Tap's hit Big Bottom in which this second chorus appears:
Big bottom, Big bottom
Talk about mud flaps
My gal's got 'em.
Big bottom
Drive me out of my mind.
How can I leave this behind?
Talk about mud flaps
My gal's got 'em.
Big bottom
Drive me out of my mind.
How can I leave this behind?
by Jellybean Sherbert September 15, 2008
by bill brasky April 20, 2005
when your out riding four-wheelers and a girls flanges are flopping on the side of the seat colecting dust , and turning into mud.
by mud dobber June 14, 2009