If I thought it would help at all, I'd probably take the time to point out that even a physical mutation like yours is incredible and you have nothing to be ashamed of. But something tells me that you've had that conversation with others before and I sincerely doubt having it with a veritable stranger is going to make much of a difference.
So I think I'll just stick with pointing out that Tim is a good man and that we all have things about our bodies we don't find flattering. I'm sure he's no different.