Nobuhiko Ôbayashi - Tenkôsei AKA Exchange Students (1982)

This hilarious movie catapults two youngsters hitting puberty into the opposite sex after a fall from which they recover in each other’s bodies. The timid sensitive girl becomes the effeminate insecure boy, and the unredeeming prankster becomes the loud clumsy girl with a chip on her shoulder. Both lead actors do tremendous jobs portraying the opposite sex, and often do so delivering more than a laugh. It ends in a bittersweet tone, but it is a really cute movie with hilarious moments.