Subway riders around the world saw a lot more flesh than they were expecting as thousands of people in dozens of cities joined the 10th annual "No Pants Subway Ride." In New York City, over 3,000 pantsless people braved the cold Sunday to join the event organized by a group of pranksters called Improv Everywhere, USA Today reports. The idea, the group's founder says, is to create a "celebration of silliness." To see a gallery of cheeky straphangers, click here.
(More No Pants Day stories.)