We jokingly call him "Bobby Bummer" (like the SNL charater "Debbie Downer")
All it takes is hitting the right topic and the flood gates open up.
The funniest thing is that our neice Julia is smart. She picks up on things quickly and will let you know if you make a mistake in a heartbeat.
For the past year or two she was practically unbeatable at the game "Connect 4", which is like a vertical type of tic-tac-toe. It took a lot of patience and practice before I could beat her at this game.
(Wait a second...that means I'm not smarter than a 3rd grader?)