Two Sisters (1974)

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Debbie and Mary are loving sisters, and they share a special bond – when Debbie feels something, Mary feels the same thing! So when Debbie is having sex on a date, Mary is at home masturbating! The girls meet a pair of horny guys who take the two sisters to their toy store, and then teach them an exciting new game. They’re going to learn how to play doctor! For those with a refined taste in classic erotica, you’re in for one hot and sexy treat!