Alkie, I'd just as soon play up the stereo-types and preconceived notions of Texas. Having spent a few years over-seas, brief periods in various locales south of the equator, and a number of other 2 week stays around the US, I am never surprised at the ignorance I encounter when I respond that I'm from Texas. Whether it's the expectation that I speak with a slow southern drawl, wear boots 24x7, own a horse/cow/gun, drive a truck, and hang out at Gilley's. With this experience, I've realized that anything I can do to reinforce these prejudices, the less likely it is that these morons move to Texas, the better it is for the rest of us. So, I talk about loving my 4x4 truck with the rifle rack, enjoying cattle round-ups, shooting at squirrels and crazy stories about the Chupa Cabre, even though none are true/real. As far as I am concerned, I'm doing all involved a big favor. I'm confirming their preconceived notions and they are staying as far away as possible from my home. The last thing they want to hear is that we have zoos, museums, music halls, symphonies, etc...
And as for bad Mexican food, you've not even heard the worst. When I was in Frankfurt, Germany we tried to find a good mexican restaurant. Hell, even a spannish tapas restaurant would have been nice. What we found was a place that served a taco salad with, get this, swiss cheese and some sort of wine-vinegar dressing. But on the plus side, they were the only place outside a military base that served iced tea. That alone made eating there tolerable. Ignoring the fact that there's nothing authentic about a taco salad.
On the flip side, I was in Dallas for 2 weeks recently, having lived there for almost 8 yrs prior to late 2005. A friend of mine suggested we go to this place he's eaten at since he was a kid. Now this guy is about as gringo as you can get. Low and behold, he has hidden this gem of a place from me for the entire time I've known him, rat-bastard. By far the best enchiladas I've had in Dallas, other than home-made, in all the time I spent there. The restaurant may not look like much but the food was great.