There are a lot of movies....
..worse than 'Plan 9 From Outer Space'. Try "Manos, The Hands of Fate". Most 'bad' movies are BORING. But I get that Iam Rand is talking about a different sort of 'bad' movie. Sicko movies. Even John Waters films are somewhat entertaining, albeit perverse. Nothing like somebody trying to make a SERIOUS perverse movie as an 'art' or 'psychological' film.
I did walk out of 'Thunderbolt and Lightfoot' because we were dating, the script didn't seem too hot and when it just got to being downright crude we left, mostly in disappointment at the drop in quality from what I was used to in Clint's movies.
One movie (and we make an art out of watching bad films) that I was sorry I went to see was the 'Blair Witch Project'. The script was terrible, as was the premise and that constant 'shaky cam' about made me seasick. And it was more annoying than scary. A 14 year old girl might find it scary. And I don't think those teenagers could go to the bathroom by themselves, much less hike out into a patch of woods, though I do remember SOME people as teenagers that were about as clueless about everything. I chose not to hang around with them, though.