What are some of the worst movie sequels you can think of?

idk if this qualifies as a "sequel" but i had to point it out. Not only was cheaper by the dozen one of the worst movies ever created. They had to torchure the American public with cheaper by the dozen 2. My god that movie was bad. haha good question thought there have been some bad ones... i agree planet of the apes makes me cringe. peace man