Bloodsucking Freaks (1976) is a great b-movie if you have a few hours two spare. This bizarre sexploitation flick features nude scenes with Viju Krem, Arlana Blue, and Jennifer Stock. This one is going to get pretty intense - nipple torture, hot wax torture, public humiliation, etc. It has this Manos vibe to it, too.
Should have been forced to have sex during this...