Momojiri musume: Pinku hippu gaaru (1978)

A duo of nubile Japanese schoolgirls explore their budding sexuality together in the Nikkatsu "pink" flick Momojiri musume: Pinku hippu gaaru (Peach Hip Daughter: Pink Butt Girls) (1978). If the title alone isn't enough to send you into a reverie of juicy Japanese teens on the cusp of ripe womanhood, then you might be interested to learn that the movie stars Ako as Yuko, a high school student who experiments with prostitution after being dumped by her boyfriend, and Kahori Takeda as Rena, the painfully shy classmate who joins Yuko on her journey of slutty self-discovery. But as far as Mr. Skin's concerned, they had us at "Pink butt girls."