fiction. i don't speak that way. i'm highly educated. and, always did well. always did well, no matter what i did. >> how this president talks can be something, as you can tell, he gets sensitive about. if he feels someone is calling him out on his intelligence or schooling. tonight, we had a visit to the studio by one of the smartest guys we know. he studies words and the way people say them for a living. we often ask him about how this president talks, other than a lot. here now, our guest, armed with a phd in linguistics from stanford. these days he's a professor at columbia university and a contributor at the atlantic. professor, welcome. is every day in this presidency a word festival in your line of work or groundhog day? >> brian, i don't like to watch