In Tokyo, a stressed-out real estate agent named Richard ("They call me Big Dick, if you know what I mean!") tries to sell a house owned by two nympho sisters. When one of the sisters catches Big Dick wearing her panties on his head, she decides to kick Big Dick's dick through his undershorts. This leads to some crazy fucking backed by Surf/Hot Rod music, which the other sister observes through the keyhole while masturbating. Exchange-able.