See Photos of the Annual No Pants Day Observed Around the World

<> on January 13, 2013 in New York City.

The annual No Pants Subway Ride Organized by Improv Everywhere since 2002 and featured seven pantless participants has hit many like fever as it was observed this year.
This year’s event took place last Sunday. Subway riders in Chicago and other cities around the world got an eyeful when their fellow transit users stripped down to their underwear.
According to the group, tens of thousands of people in more than 60 cities and 25 countries left their pants at home last year and walked almost n*ked while riding the train.
What are the rules? According to Improv Everywhere, “Random passengers board a subway car at separate stops in the middle of winter without pants. The participants behave as if they do not know each other, and they all wear winter coats, hats, scarves, and gloves. The only unusual thing is their lack of pants.”
Though the event began in New York, people in cities from Portland to Paris to Prague are planning to participate this year. See the complete list.