He has 42 teeth (32 after the dentist pulls 10 at the same time).
He has large feet and hands. Also, a skinny, but supportive body and a large head. “With my big feet and pencil body, I looked like a capital L walking down the road“ (p.12, ll.28-29)
He is farsighted in one eye, and nearsighted in the other.
He is prone to seizures.
He stutters and lisps.