While it may sound like the worst lesbian sex position ever Switchblade Sisters is a classic exploitation film from 1975. The film tells the story of Maggie, the new girl at school who accidentally gets mixed up with the “Dagger Debs,” the meanest, toughest gang of double-D-endowed dames at school. Poor Maggie finds herself in prison, where she must fend off the advances of the the lecherous female warden. When she finally makes her way out of the prison, Maggie is confronted by her one-time best friend Lace, who is now convinced that Maggie betrayed the gang, leading to a knife fight to the death by the two scantily clad women.

Domy Books (1709 Westheimer) presents Switchblade Sisters as part of its Wednesday night film series at 8 p.m. on April 11. Admission is free and refreshments are available from Brasil Cafe next door.