If I tell you a secret, will you promise not to tell anyone else? I've been driving with an expired driver's license for the last 2-plus months. Yeah, yeah, I know we discussed expiration dates for driver's licenses some time ago. But I completely forgot that my license expired on my birthday Nov. 20 -- until an observant airport security guard at the Orlando, Fla., airport spotted my oversight Saturday morning. I didn't know why she was holding staring at my license while she carefully turned it over a couple of times. "Do you know this license is expired?" she asked, in a voice that wasn't that pleasant. Hunh?! was the only reply I could muster. I imagined myself being stuck at the Orlando airport until I could figure out a way to prove who I was. The guard continued: "You know this is 2011 and not 2010, don't you." I was a deer in the headlights. Mebbe she pitied me because I didn't look like a domestic terrorist. Or mebbe she was a Florida Gators fan. I was wearing my new Florida Gators T-shirt en route back home, with stops in Philadelphia and Denver. She let me continue through security. Moments ago, I re-upped at the local DMV. I'm legal again -- and don't have to worry about an expired license for another 8 years.

Question: Do you know when your driver's license expires?