We know he grew up on a tiny farm, but here's something I hadn't really considered before - was he ever around anyone BUT his family growing up? This may be his first time (barring the Tuna Fish) that he's actually spent a good deal of time interacting with anyone who isn't a family member, and obviously he wouldn't really know how to act around peoplefor that reason (not asking them how they feel, etc)
Of course it's possible they had farmhands and such, but even so.
Thoughts?