Aka muddy boot- the darkened skin that radiates outward from the vagina at the center of a woman's inner thighs until the typical skin of the body is attained.
He had only gone down on girls with lily-white skin before Esmerelda, and was jarred by unexpected sight of a muddy bootprint. He descended into the dark abyss with trepidation.
by Pantaloon January 9, 2008