'Monster in the closet' from 1986. I saw it as a kid and it had me in stitches! if just for the closing line by the narrator... something along the lines of, "...and in the end, it was beauty that killed the beast!" (the lead character was a geeky scientist type, who had people swoon whenever his glasses fell off).
I literally only saw it once on video and haven't come across it since, I do remember it being complete cheese though.
Another I saw was at about the same time was 'Killer Klowns from outer space".