Ugh! It drives me nuts when people take cracks at curly hair! The comment that makes me go bezerks though is the "do you ever straighten your hair??" comment. I don't wear my hair down a lot, but when I do people always ask that. It's like 'gee, thanks. I'm so glad you like my hair curly and can accept me for who I am.'
I did have a friend tell me that my hair deserved it's own zip code one time though, it was funny though. She told me she was going to introduce me to her friends at her new school "Hi, this is my friend, and yes, her hair does have it's own zip code." haha. :P