I have a few stamps in my passport, but the greatest culture shock came when I held the door for a NYer and she snarled at me, "I can get it myself." I had become an unwitting agent of the patriarchal oppression machine.
It didn't let it get me down, though, and have been impressed with how nice NYers can be under their tempura-battered exterior. I see OKC as just another avenue for me to meet new people, share some adventures, and possibly meet someone special who won't object too vigorously when I hold the door for her.