The following is a true (and about as stupid as the OP's) story.
Was driving to the base library one night not too long after I got to Ft. Hood. It was dusk...You know, not totally dark, but just dark enough that people start turning their lights on. I got pulled over. I had no idea why, wasn't speeding or anything.
Cop walks up, looks over my paperwork and such, then asks me if I knew why he stopped me. I said no. He says "What are you not wearing?"
I look myself up and down, and in a moment of sheer "WTF?" reply "Uh...socks?"
The cop gets an angry look on his face for a moment and then busts out laughing. I get even more confused.
"I'm sorry ma'am...Your seatbelt is the same color as your sweatshirt. I didn't think you were wearing it."
Cop hands me my papers back and lets me go about my merry little way.