Cavewoman
(noun) -

A woman who has a vagina that is entirely too wide-set or stretched from frequent intercourse. The vagina must be so wide and vacuous that it takes more than twice as long -- as ordinary -- to orgasm.

Etymology: 12th Century Latin:
Cavuus womanai (hollow-woman)
Mike: "Yo, so that girl's vagina was so wide that I managed to squeeze an entire football into it."

T.J.: "Wow, sounds like a real cavewoman."