If you want a genuinely terribly one, check out “Maniac Nurses Find Ecstasy.” Sounds like a porn title, but it’s not. Just a batshit weird movie that makes no sense. It’s a Troma movie, but it’s not even funny like Toxic Avenger.
Why do people keep acting like there’s nothing between 0 and 100? You could also say “I don’t think we’re going to convince each other in this conversation,” which is already politer, without having to ask someone to agree to something else that they don’t want to agree to.