When a woman is very excited sexually, a lump develops on the inside of the vagina and if it is particularly large (genetics determine this) then it may protude.
Duude, that's a huge woman bone.
it is a large lump, wich developed on the inside of the vagina, it happens when a woman becomes excited. not many people know about it how ever because of its obsucre placing.
Oh man, i can feel my woman bone!