10 More Horror Movies Where Pranks Brutally Backfired

It's everyone's worst nightmare: you get lucky, get home, get some, and wind up losing your genitals to a sharp-toothed vagina. Luckily for us, and the film's protagonist Dawn (Jess Weixler), who happens to be afflicted with the folkloric vagina dentata, the titular teeth are only unleashed on those who are well and truly deserving of them - abusers, scoundrels, and sex criminals.

A good Catholic schoolgirl, Dawn finds herself in an unexplainable situation when the teeth start sprouting. Approaching her classmate Ryan (Ashley Springer), she seeks comfort when her life falls apart and her new dental set is chomping off penises left, right and centre. Not knowing all the ins and outs of her condition, Ryan plays it smooth, having secretly made a bet with a friend that he can coax her into bed. The pair do the dirty, grab forty winks, and all is well. Except, of course, it’s not.

Having successfully duped her into sex, Ryan openly boasts about his prank-turned-profit during a subsequent bout of intercourse with Dawn and, well, her vagina gives him a little more (or, strictly speaking, less) than he bargained for.