1969年伦理片电影《皮衣姐妹》讲述A husband is blackmailed by 3 lesbian bikers after they spot him having sex with another woman in a convertible. They then take the man's wife out for a picnic and some nude motorcycle riding. The husband finds some male bikers and together they try to save his wife from becoming a lesbian biker.由班比·艾伦,Pat,Barrington,Larry,Martinelli等主演。