The XKCD guy just put up a comic in which he posits the "Falcon" part of "Millennium Falcon" doesn't make sense, due to etymology.
I can tell the point he's trying to make, but he could've tried using better material. I soon thought of a similar example that feels 10x better, from "The Lion King."
(Incidentally, I made an earlier post in which I pointed out how the XKCD guy claimed to know "The Lion King" word-for-word, and in that very same comic he messed up one of the quotes.)
Late in the movie, Simba is talking to Rafiki, and Rafiki whacks him on the head with a stick.
Simba: "Ow! Jeez, what was that for?"
Rafiki: "It doesn't matter. It's in the past!"
Things like pop-culture references can be chalked up to coincidence. Maybe when Pumbaa shouts, "They call me Mr. Pig!" that's just what he would shout normally. Maybe when Zazu sings, "It's a small world after all," that's just an actual song popular in the grassland. But how is Simba able to make a slangy reference to Jesus, considering he's a lion in Africa? Does Jesus exist in the "Lion King" universe? Was Jesus a human? That's a reference to a historical figure, and not just a case of etymology--which is a step beyond the suspension-of-disbelief normally required when lions are speaking English.
For the record, merriam-webster.com lists the origin of jeez as: Euphemism for Jesus; first known use: 1923.