Links: TVTropes, Wikipedia, IMDB (5.7).
It's a horror comedy about a woman with a vagina dentata (teeth down there). It sounds like a fun premise, but the reality is lackluster: the movie spends too much time with the main character focusing on premarital abstinence and purity rings, and then spends too much time with her being a victim of both sexual assault and her own body's homicidal urges. (TVTropes astutely calls it "a Lifetime Movie of the Week with a carnivorous vagina thrown in".) There are some fun bits scattered through the movie, but overall the film doesn't gel together and was more of a disappointment than a comedy. Score: 1 star out of 4 (but aaalmost 2 stars).