My father told the story of when he was first away at college (which was Dartmouth, class of 1939) and came home for his first visit.
I guess my grandfather asked him "When are you leaving" by which, of course, he meant "We are happy to see you, how long will you be able to be with us?". My father, of course, took the other meaning "Okay, you've barely gotten inside the door, now when are you leaving?".
My dad didn't talk much about his relationship with any of his family, but this was a great insite into his relationship with his dad. I wish I had more of them.