It’s not that obscure, it’s from “Short Circuit” though my favorite line from that character (whose name escapes me) was the discussion of his ancestry.
“Where are you from?”
“Chicago”
“No, I mean, originally, your ancestors.”
“Oh, them... Pittsburgh.”
“Where are you from?”
“Chicago”
“No, I mean, originally, your ancestors.”
“Oh, them... Pittsburgh.”
Strait outa the caves. LOL