"All right, I can see your point. But basic mending is a fairly simple task. Even a novice can piece back together his mother's accidentally-broken vase. So. What is it that you repair?"

Because either this guy is really full of shit (he could be, he doesn't look nearly old enough to know much about the deeper arcane arts) or he's alluding to something more than just patching up cracked ceramics and torn clothing.