So many wonderful perspectives and tips! I do wonder what is age, what is giftedness, what is personality... at any rate, there are some really good suggestions here for us to try.

We don't spend a lot of time around other boys his age. There aren't any in our neighborhood and so we really only see them at camp/school. I suppose I should go look up normal 7-year-old boy behavior. I am pretty sure it includes thinking bodily functions are the funniest things ever.