That's a pretty interesting point. Never knew that.
Basically, I know a bunch of people who've been to college and would jump right down your throat if they hear you say "You and me should grab coffee some time," but will walk around all day saying things like "Hey, let's see if Fred wants to grab coffee with you and I."
[1] https://en.wikipedia.org/wiki/Hypercorrection#Personal_prono...