I'm sure he learned it. It'd be pretty difficult not to. Some people, though, are just a-holes, and like to put others on the spot.
LOL.....at "like to put others on the spot"
I'm having another go at good manners with the grandkids...last summer they unsuccessfully attempted to teach lure me into a game called "truth or dare".
After a few of my "what in the world would possess you to ask such a question?" and "whyever would you want to know that?" they gave up, he he!