I have friends who will walk up to me, play with my curls, and then walk away without saying a word. It's so ridiculous! I'll admit that curly hair is fun to play with. I do it myself sometimes. It's just so silly how everyone seems to think that it's perfectly acceptable to just stick their hands in your bubble!
I also got the "Is your hair natural?" thing a lot when I was younger. Especially in elementary school, oddly enough. I was always tempted to respond with, "No, my mom pays more money on my hair than her's just so I can pretend to have curly hair."