I have a rule of thumb for abysmally bad movies. It is the late-middle-aged Jewish comedian-who-was-never-funny rule.
Alan Arkin and Albert Brooks are at the head of the list. Men who continually look like they are in pain with intestinal problems and whine, nag, or complain with every line of dialogue.
For the most part, Walter Matthau and Jack Lemmon were that way, too. And while you might laugh at their torments in the movies, you are left with the feeling of "what a miserable person, living a miserable life."
Oh. Oh! Don't forget Billy Crystal on that list.