Sometimes… Like a Prostitute (1978)
1978A popular author of erotic novels is cuckolded by his two friends: one screws his wife while the other screws his mistress.
Actors: Erina Miyai
Invisible Man: Rail! (1978)
1978A horny scientist who is married to a hot wife and lives with his virginal step sister invents a drug that can make him invisible. Erotic high jinks ensue.
Zoom In: Sex Apartments (1980)
1980While biking on her way to her ex-boyfriend’s place, a wife gets railed in an open field. She proceeds to go to her ex-bf’s place, anyway, doesn’t tell him about the rail, and has sex with him.
Sex Hunter (1980)
1980A disabled guy’s sister who is in love with him trains his virginal girlfriend to become a sex-mad slut, hoping that when he sees what a whore she has become, he will reject her and fall straight into his sister’s loving arms instead.
Hell’s Revenge (1979)
1979A wife conspires with her lover to k..l her old husband for inheritance money. Her lover pretends as a home invader and rails/bangs her in front of her husband to give him a heart attack.
Play it, Boogie-Woogie (1981)
1981When a chick’s live-in boyfriend suggests that she should prostitute herself so that she can earn more money than her bartending salary, she gets offended and cheats on him with an older man.