A woman who is so hot all you can think of is having sex with her.
Man, that Heather Locklear is poontastic!
by Tuchdown November 20, 2002
Adjective used for describing a woman's vagina which is in immaculate condition and perfectly waxed or shaved as well as clean.
"You know that chick I met the other night? When I took a look downstairs it was poontastic!"
by imperfect faerie June 13, 2006