I can't remember this movie from the 80s. I can remember a few fleeting details. Stupid getting old.
So, I'm not really sure where to start. I remember that maybe it had a movie poster like this.
I think it was drawn, and I think it had all the title characters standing in the middle of the frame, like in that picture. (To be clear, I am just using Vacation
as a frame of reference. I know it's not that.)
I seem to think it had something to do with some teenagers and they go on an adventure of sorts.
The thing I really remember most clearly (which isn't saying a whole lot) is that at some point one of the kids - an older boy, maybe? - transforms into a snake-person or a reptile-person or something. A snake-person, I think. And I remember as a kid this really scared the hell out of me, and in fact I think this is the only reason I remember this movie at all.
I just seem to remember his face - he had these fangs and these red eyes or something. But I think that was only part of a much larger story.
This is on the tip of being on the tip of my tongue. It's like something half-remembered. I've been Googlin' for "80s movies" and "80s movie covers" thinking if I saw the box art I would recognize it, but no luck so far.
Maybe you've got a clue.