Ha ha! Zen Scanner and HowlerKarma -- I like both your answers.

I chatted with DS about this after school. I asked him if we should come up with something to say in response to "you must be really smart." He said, "I'll say, 'Yeah....Um..... sure...."

I told him that worked, but if he ever wants to brainstorm to come up with other responses, he should let me know.