My wife and I were headed out of DFW, and I showed the ID/BP to the agent first. As I was putting my stuff on the belt, I hear the agent ask my wife, "Is that your dad?" I look over and he's pointing at me, and they're both laughing. My wife is actually a year older than I am. I'm still not quite sure I get the joke to this day, but at least he had a sense of humor.