No pants subway ride

You probably won’t see London or France on the train this Sunday, but you will definitely see underpants.

Boston's 6th annual No Pants Subway Ride, hosted by the social arts and event group BostonSOS, will take place on Sunday, January 13. On a typically mundane train ride, passengers may suddenly find themselves surrounded by pants-less peers.

James Cobalt, the executive director of BostonSOS, said the event is great because it has a guaranteed shock factor.

“No matter how popular it gets . . . there are always a ton of people who don’t know what’s going on,” Cobalt said. “For me, the most interesting thing of all (with this event) is to see how people try to perceive and understand what’s going on. For me, it’s just silly . . . For a lot of people, that’s not enough.”

The No Pants Subway Ride is an annual event that was started by New York’s Improv Everywhere in 2002. Since then, the event has grown and now takes place in cities across the world. When the event started in Boston in 2008, about 70 people participated. Last year, about 350 people willingly de-pantsed themselves on the train.