The absolutely horrific generic '90s "dance" music throughout the entire movie notwithstanding, "Just One of the Girls" is a very funny take on gender-switching, kind of an extended end of an era of '80s goofball comedies.
Corey Haim (who is always likable, c'mon admit it) plays Chris who dresses as a girl to avoid the bully at school, and what happens? The bully falls for Chris, Chris falls for the bully's sister, and Chris is forced to keep up the act so he can do his music. How's that for the start of decent hi-jinks?
And that video cover....no joke, absolute perfection. Remember when we can laugh at stuff like this, and this premise was strictly a comedy premise? Now here we are, thirty years later, and if you are against a man dressing as a woman and going into a woman's bathroom or locker room, you'd be called a "transphobe" or something ridiculous by a lot of nutcases.
However, back at a time when people were more rational (and could define what a "man" or a "woman" is without having to be a biologist), we can laugh at the absolute craziness of the comedy that is a boy dressing as a girl and going into the girl's showers to gawk at the nude gals.
Ah yes....when comedy was just comedy, and not the sad reality.
Corey Haim left us way too early, having finally succumbed to his demons. Maybe some (or many) consider his work to be lightweight, but hey, the guy was talented even at a young age, and in his comedies, made us laugh.