An activity often carried ot by lezbians. To bump ones vagina against anothers. Can be done with two transvestities.
"I have so many bruises from vagina bumping."
The large protrusion seen through a females' pants just above the the vag typically right under the belt buckle. Not to be confused with either a Fupa or cameltoe.
"yo is she really a dude"-Tim
"you mean her bulge? no she just has a major vagina bump"