Yes, it is possible to transfer on Washington, D.C.'s metro without pants. Photo by M.V. Jantzen.

People from 50 cities in 24 countries stripped down to their skivvies on Sunday to participate in the tenth annual No Pants Subway Ride, a serious feat considering how cold it’s been in recent weeks. The subway event originated in New York City by a group called Improv Everywhere. The chaotic and silly act has gained popularity over the past couple of years, drawing attention to public transit. Here are a few highlights from the event:

Here’s a video from last year’s event, staged in New York City. Check back at the Improv Everywhere blog for this year’s version.

People brave the wet chill in Seattle to bare all. Photo by Atomic Taco.

Riders drop their pants in New York City's Union Square. Photo by Karen Blumberg.

Farther north, they did it, too! People go pant-less on the 29th Avenue Station SkyTrain in Vancouver, British Columbia. By eych-you-bee-ee-ahr-tee.