Specifically, one who believes in the power of the vagina. The thought that only good things come from the vagina. Followers realize that if they actually have a vagina or have use of one they are truly blessed. The opposite of penicentric.
Man: Hey beautiful. I couldn't help but notice your beauty from across the room.
Woman: Um, sorry. I'm a vagatarian.
Man: Vagatarian?
Woman: Yeah, I like what you don't gave.