I just saw Superman III in a theater the other day. It's not so bad. It's a pretty good comedy for awhile which is weird for a superhero movie, but better than getting all eighteen characters introduced three times. Then it turns into
Fight Club briefly and then just gets weird and nonsensical at the end. But that hardly seems like the sort of thing you hold up as an example of a movie so terrible it must be mocked in a public forum. I guess the point is you can make fun of any movie? That sounds noble.