I have seen movies that have been objectively worse than Glitter, and I suppose I'm a bit of a connoisseur at this. The objectively worst movie I have ever seen was a little-seen Hulk Hogan "heartwarmer" (you should be seriously afraid at this point) called Santa With Muscles. The plot, as I remember it, involved Hogan's ultra-rich WT character losing his memory and coming to believe he is really Santa. With Muscles. And a coat that makes The Village People look straight. He winds up living in an orphanage and "cheering up" the orphans by combating the evil Ed Begley (yes, that Ed Begley) who is cast as a cutthroat land developer in one of the most egregious instances of miscasting in history whose character's last name is, I kid you not, Frost. No, his first name isn't John, because that would be just a bit too much like wit. Begley's presence here is bizarre in a way not unlike professional partier Tara Reid's turn as a college professor in Alone in the Dark. I haven't seen that movie, but the absurdity of that sentence is enough to make Albert Camus cry uncle.
Anyway, Begley wants to close down the orphanage, or something, but he knows who Hogan really is and tries to steal his money. There is a lengthy subplot in which one of Jack Frost's underlings tries to nab Hogan's fingerprint so that he can get access to all of Hogan's money. This is eventually done, but it doesn't work because the dude gets Hogan's wrong thumbprint. Like he needed the right thumbprint, but he got the left, or something. It's all in accordance with how corporate business is done in the seventeenth dimension!
Oh, but there's more. So much more. But I'll spare you the discussions of swordfights with volatile crystals. It's the denouement that's so compelling, because, as it turns out, the orphanage is located atop some sort of subterranean lair filled with demons that kill Jack "Ed Begley" Frost. Then Hulk remembers who he is, and adopts all the kids, or something. I know, it's practically right out of the screenwriting books. I know it might seem like I'm joking--who writes a supernatural twist into a movie like that, right?--and yet that's exactly what happens. It is the worst movie that can be imagined. And I've seen Batman & Robin.
Here's the film's imdb page. It's so much worse than I described it. And a propos of the mention of Jack Frost, I recall the two films named Jack Frost that were released within a year of one another. One was a slasher film, and one was a "heartwarming" family flick. Look at the pictures of the two movies, and try to tell me, honestly, which one of these two abominable abominations is scarier: