A vagina that's so loose that you can crawl up inside it and keep warm if you're too cold at night. Reference, the Tauhtaun creature from the planet Hoth in Star Wars, The Empire Strikes Back.
A Tauntaun Pussy can be found on women who have 4-5 + children and do not practice Keegles AT ALL. Most T.P.T. girls. Women who have had 50+ partners, many of whom were African American. Any serious slut!