James, 3rd Grade Boy Genius

So yesterday I was shelving in children's. There were two younger boys who decided it would be a good idea to start running around and playing tag, so I asked them to stop running. One of the boy's mothers promptly appeared and chastised her son for running ("Were you running? We don't run in the library!"), and made him stay with her for the rest of their visit. The other boy had no parent in sight.

I continued shelving, and every once in a while I'd hear rapid footsteps. At one point I peeked around a shelf, just in time to see him halt to a walk, and he said "I'm not running..." in that sing-songy mocking voice that just drives you crazy.

Then, I was at the dvds, and he came over to me. This is the conversation that ensued:

Boy: "So, what? Are you just doing some work?"

Me: "Yes, that's what I'm doing."

Boy: *Pauses* "Do you know who I am?" (in that tone of voice and hand gestures that insinuate that I should indeed know who he is because is all-mighty and important)

Me: "No, who are you?"

Boy: "I'm James, 3rd grade boy genius."

Me: *trying not to laugh* "3rd grade, huh? That's a good grade."

Boy: *nods and walks off*

I just about died. When this kid grows up... he's going to be terrible.