WARNING! The next page can generate some EXTREMELY disturbing mental images... Proceed with caution... Or, better yet: Don't proceed at all, YOU FOOL! ...Don't tell me I didn't warn you!...jackass...Basic Trope: Teeth on a vagina.
Straight: Alice has teeth on her vagina.
Alice's vagina is able to eat people alive.
Alice is a gigantic vagina with teeth.
Alice eats through her vagina.
Downplayed: Alice's vagina has rough abrasions on the inside of her vagina that superficially resemble teeth
The teeth are actually part of a mechanical anti-rape device.
Subverted: Bob is told by Charlotte that Alice has teeth on her vagina. When he sleeps with Alice, he finds out that Charlotte just made that up.
Double Subverted: But actually, Alice's teeth are retractable fangs.
Alice's vagina has teeth...and lips, and a tongue, and a friendly personality.
Alice actually flosses and brushes her vagina's teeth.
Zig Zagged: Carol tells Bob that Alice has a Vagina Dentata. Bob asks Alice but she denies it. Later, under the influence of drugs, Bob tries to have sex with her, but he is terrified when he suddenly sees a pair of sharp fangs. A few days later he confronts Alice about this incident, but she shows him there are no teeth down there, and it was all an hallucination caused by the drugs. Bob proceeds to have intercourse with her, and everything works out fine. But wait, suddenly Carol appears, and tells Bob that the teeth are actually retractable, and only appear when partner is in fear, and she knows this because she have them as well ...