So the subject quote is from a TV comedy (or possibly a movie), likely 90s or late 80s. The setup is 3 characters talking about some sort of job or task (maybe a low-level heist or something), with the protagonist and two ‘dumb hick’ types. The hick characters may be brothers.
Hick 1 says that Hick 2 has a good idea, and Protagonist is skeptical, as Hick 2 is known for being especially dumb. Hick 1 says something like the following:
“Yeah, everyone thinks he’s dumb, but one time we were talking about who would win in a fight between Darth Vader, Spider-Man, and the Munsters. I said Darth Vader for sure, but he said the Munsters, and he’d done pages of math to prove it…”
Then the protagonist cuts him off.
I remember it being very funny, so apologies if my memory doesn’t do it justice. But what show (or movie) was it?
The thread’s only three posts, and it begins with a link to a disabled Youtube video. I also checked the Wayback Machine, but that was a long shot, and that video isn’t archived there.