10 More Horror Movies Where Pranks Brutally Backfired
6. Heathers (1989)
Heathers - it's the classic story of girl meets boy, boy kills girls, girl kills boy. Veronica Sawyer (Winona Ryder) has just about had enough of the popular clique of Heathers (Duke, McNamara and Chandler) she somehow finds herself a part of, and the arrival of trench coat-clad bad boy Jason Dean (Christian Slater) offers the opportunity to transgress and get her own back on Westerburg High's very own pre-Plastics.
JD and Veronica prank Heather Chandler (Kim Walker) by breaking into her house and mixing her a drink of orange juice and milk. Sure, it's no elevator trapdoor, but this is the '80s!
JD, a known misanthrope with a mysterious past and a turbulent home life, also pours out a glass of bleach, and when Veronica accidentally mixes it up with the OJ and mammary sap, he keeps schtum.
This fatal prank spells the end of Heather, and while it brutally backfires on Veronica, who is racked with guilt and remorse, it is just the beginning of JD's rampage. Revealed to be hell-bent on the destruction of not just the Heathers, but the football team, the staff and the whole high school, he embarks on a path of chaos that sees him fall prey to his former flame in the finale.