School Spirit (1985)

The only thing keeping Billy Batson from the girl of his dreams is one little condom – or rather the lack of one. Lucky Billy finds one at an all-night roadhouse – but speeding back to his girl, he is killed in a head-on collision with a truck. Now invisible, Billy must find his sweetheart and rekindle her fire – but when he comes back to school as a ghost, his first stop is the girl's locker room, and he's beginning to "see" all the possibilities! IMDB

Although i usually don't read the back cover I couldn't help myself on this one, and i was happy to find out, although i loved every word of the backcover-text, that part was over in five minutes and the movie just kept getting more wonderful.
I just keep smiling throughout the movie and everything i want to happen, happens. And that's by no means a put-down, but finally someone, who knows what a young-horny-men audience biggest fantasy is, to be able to sneak around the girls lockerroom or private shower, and when the time is right,become visible and get it on with them, and among those lovely 80's-easy-chicks nothing can go wrong.
By far one of the best high-school 80's movie i've seen in a long time.

IMDB Reviewer