This is one sign I’m inclined to believe, and even if I didn’t I wouldn’t want to take the chance. Again, you don’t want to mess with Texans – and they are watching you. Texans are known for their love for pickup trucks, but you have to buckle up in those as well, if you don’t want to mess with the law.
No one is above the law in Texas, because everyone is above the law. One way or another, I’d buckle up if I saw a sign like this; that’s mighty intimidating.