Two adult friends insist they have never seen each other as sexual partners. If that is true, touching each other all over should not be a problem or create an erotic mood. They take on a slippery oil-massage challenge involving gleaming bodies, tiny paper underwear, and a cock threatening to burst through the fabric. As oily outercourse risks sliding all the way inside, this 190-minute experiment asks whether they can remain friends or will end up having sex.