The No Pants Subway Ride is back–at least that’s what CBS News reports. This statement begs the question, “What is the No Pants Subway Ride?”

Photo gallery: The world marks No Pants Subway Ride 2016 https://t.co/1WVkuXukzX pic.twitter.com/Mi4520DHOL

— CBS News (@CBSNews) January 10, 2016

Today is apparently the day that participants ride the subway sans their pants. First organized in New York City in 2002, the ritual now takes place in several cities all around the world.

Organizers call the No Pants Subway Ride an “international celebration of silliness.”

Today is No Pants Subway Ride https://t.co/YtV2KWfqQd pic.twitter.com/akYYxnA6UB

— The Telegraph (@Telegraph) January 10, 2016

In Boston, which typically sees temperatures in the frigid range in January, participants are getting a bit of a reprieve. Those taking part in the No Pants Subway Ride might get wet–the region is experiencing torrential rain and high wind gusts–but they certainly won’t freeze, with temperatures in the low 50s.

15th annual 'No Pants Subway Ride' taking place today in NYC and cities around the world https://t.co/sO7a2oUlc5 pic.twitter.com/2YjZNXEJHm

— Eyewitness News (@ABC7NY) January 10, 2016

In most areas, those participating in the pantless ride will board the subway with their pants on, and strip them off once they are on board.

In addition to U.S. cities, including New York, Boston, Chicago, Dallas, and Atlanta–just to name a few–the No Pants Subway Ride also takes place in London, Berlin, Vienna, and several other countries around the world.

WATCH: Passengers go pantless for "No Pants Subway Ride" nationwide today: https://t.co/aGQJzOvgxY pic.twitter.com/njcgGMcuWa

— ABC 7 Chicago (@ABC7Chicago) January 10, 2016

Did you or do you plan to go on a No Pants Subway Ride today?