I've often believed the "Texas attitude" was a response to the "You're from Texas, how the hell can you live there?!?!?!" attitude I see in people from other states. After hearing it enough you get to feeling "yeah, fuck you too asshole".
I see similar things about America when dealing with people from other countries - such as "You American's are so arrogant, you don't even learn other languages". They don't realize that lots of American's have learned other languages, but because we're not in a position to use them frequently enough that we've forgotten them by the time we can afford to travel to those other countries. I was talking to a guy from Germany who'd made a similiar comment and asked him how far he had to travel before he had to use a different language - just 3 hours. Another 3 hours to know a 3rd language. I told him that for me, it was 7 hours to get to Mexico were I'd need Spanish, but to get to Canada were I might need to use french was a multiple day journey - nothing something you're going to do for a short "weekend getaway". Until then, he never comprehended the size of the US and the affect of having a single language over such a vast area. Brad of Stardock had a similiar "size of the US" experience with visitors from Europe, they thought they could drive down to Disney World for the day - Brad's in Michigan...
That's all I'll say on this subject else the "fuck you too asshole" response will be coming out :-)