The Toxic Avenger is a 1984 American superhero film directed by Michael Herz and Lloyd Kaufman (credited as Samuel Weil) and written by Kaufman and Joe Ritter. The film, released by Troma Entertainment, known for producing low budget B-movies with campy concepts and gruesome violence, was virtually ignored upon its first release, The Toxic Avenger caught on with filmgoers after a long and successful midnight movie engagement at the famed Bleecker Street Cinemas in New York City in late 1985. It now is regarded as a cult classic. Wikipedia
(Melvin catches Slug and Wanda having sex in the locker room)
Slug: Get out of here you pervert.
(Wanda pulls out a switchblade)
Wanda: Or I'll kill you.