I didn't know about the Texas brown snake. They must not be found as far east as I live. I've heard of hognose snakes, which will also play dead, which I find funny. You can turn them over and they will flop right back over on their backs, and will even let their tongues dangle out of their mouths. It's hilarious. When the coast is clear, they will flop back over and get out of the vicinity as soon as possible.
I don't think I've even ever seen a picture of a Texas brown snake. I guess they don't hurt people, so you don't usually see too many pictures of them.