Ever stop to consider that maybe he's the one doing the baiting?
Brings to mind one guy I used to ride with. He entered his first competition and won it on a solo break. It happened to be the state champ road race, and he was a superlative ski racer previously and just got into riding as a cross-train sport. His techniqe wasn't the best, but his power overshadowed it.
Anyway, why not show him some hill-climbing technique. They say you never learn a subject so well as when you teach it. Just maybe you'll have gained a new riding partner, or at least someone to talk bike with at work.