Great teenage 80's flick. Very funny!! The title of the movie doesn't describe the movie. The movie has nothing to do with the book "The Joy Of Sex". I love those teenage 80's movies. I hadn't ever heard of this movie for the longest time. Before I saw it I wasn't expecting it to be that good. Once I saw it I thought it was fabulous and wondered why it was so underrated. It is now one of my most favorite 80's movies. I highly recommend that you see it!!