Things are going to get a little bit cheeky early next year for passengers that are taking the MBTA around the city.

On Tuesday, the Boston Societies Of Spontaneity announced that the annual “No Pants Subway Ride” will take place on the transit system on Sunday, January 13, 2013.

“The turnout was great last year and the after party was one of the biggest we have had,” said James Cobalt, one of the event’s organizers. “This will be the sixth year in a row we will have this in Boston, and it’s really exciting.”

Cobalt also called the get-together “a little comfortable,” adding this will be his fifth time riding the train without bottoms on.

The exact time, place, and after-party for the annual prank are still up in the air, but a Facebook RSVP page has been set up to help round-up pants-droppers for  the yearly shenanigans.

Hosted by the Societies Of Spontaneity, organizers encourage courageous riders to show up with warm clothes on and then strip down to their skivvies while traversing on the underground train system in the Hub.

The ride is choreographed so that pants-less passengers are always bunched in groups and never riding solo.

The group also works with the MBTA and Transit Police officials to make sure the nearly-nude ride goes smoothly and instills in everybody “some modesty” when showing skin.

“It’s still hard for some people to take, but we try to be respectful to everybody—as much as you can be respectful when you are in your underwear on the train,” said Cobalt.

Last year, more than 270 people met up at South Station and boarded various MBTA trains before dropping trou in front of the unsuspecting public and riding the rails sans pants.

The “No Pants Subway Ride” first began in New York City in 2002, and was organized by ImprovEverywhere.  Since then, the movement has grown internationally and has reached transit lines from Los Angeles, Chicago and Miami to Berlin, Jerusalem and Sydney.

Below is a video of last year’s event, along with photos showing participants who were willing to bare it all in the brisk New England weather.