I've had a similar experience when getting my photo taken at the DMV. But what I really want to say is--thanks for starting such a great thread!

I think we've all had those moments when people are too much in their own heads to realize they're insulting us/hurting our feelings . . . After I spend time being angry and indignant, I like to think that it really reflects their own weird hang-ups. I then think, 'Thank goodness I'm not so hung up on perfect/thick/straight/ hair, etc.'