Vagina Dentata/Playing With

Basic Trope: Teeth on a vagina.
 * Straight: Alice has teeth on her vagina.
 * Exaggerated: Alice's vagina is able to eat people alive.
 * Alice is a gigantic vagina with teeth.
 * Alice eats through her vagina.
 * Justified: The teeth are actually part of a mechanical anti-rape device.
 * Inverted: Bob has teeth on his penis.
 * Alice has a vagina in place of her mouth.
 * 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.
 * Parodied: Alice's vagina has teeth...and lips, and a tongue, and a friendly personality.
 * Deconstructed: Because Alice has teeth on her vagina, she Can't Have Sex Ever, even though she really wants to. Because of this, all of Alice's relationships fall apart and she winds up lonely and bitter.
 * Reconstructed: Until she meets Bob, who has specialized tastes.
 * 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 ...
 * Averted: No character has teeth on their genitals.
 * Enforced: Bob is the universe Chew Toy, so everything that happens to him has to be bad. He is bound to be chewed even if he is trying to have sex with her (apparently normal) love interest.
 * Lampshaded: "My family was struck by a curse centuries ago that affects the eldest daughter at puberty.We're getting quite tired of it."
 * Invoked: Alice uses an anti-rape female condom with teeth on it.
 * Defied: Alice starts dating an orthodontist/gynecologist who can take care of her problem.
 * Discussed: So, Alice, do you really have teeth on your vagina?
 * Conversed: Bob "Alice has teeth on her vagina" Carol "Oh, her too?"

Gingerly head back to Vagina Dentata.