the term Vagina was first used by the greek mathemtician "Gladius" when he was washing the dishes in 876 BC. In latin, vagina means sheath or scabbard. Vaginas lubricate during sexual intercourse, which makes sex pleasureable. It is the name given to the female genertalia. Other variations of vagina include, Pussy, Cunt or Douche.
You grandmothers comming over in a minute, and you dont want your brother, Henry Rawlinson, to see your vagina do you?