I never saw the indie horror movie, Teeth, because the thought of a vagina with fangs that bites off men's penises makes me think that waterboarding ain't so bad. As a filmgoer, I'm not so sure how much more acceptable is the comedy/horror B-movie, One-Eyed Monster (2008), a film that kills off roly-poly porn legend Ron Jeremy early on...only to have his detached penis come to life and slay people in unique ways. (And I use the terms "comedy" and "horror" very loosely.) Yes, the movie is readily available on DVD, but I don't think I can handle watching anything that depicts penises—oh, glorious penises!—as things of evil.
Watch the trailer: