Here's Why You Might See Pant-less Passengers on the Subway This Weekend

— -- A semi-nude brigade of comedians will be overtaking New York public transit this weekend for the 15th annual "No Pants Subway Ride."

Yes, you red that right: Improve Everywhere -- the prank collective behind the viral "Frozen Grand Central" video -- is hosting the ride on Sunday. They've recruited thousands of people who plan to casually remove their trousers in transit -- all while their upper halves remain bundled in winter coats.

Organizer Charlie Todd, who began the tradition 14 years ago with just six pant-less pals, tells ABC he and his friends wanted to do something "confusing and crazy" to entertain the captive audience on New York's busy subway.

He's expecting 3,000 to 4,000 participants in New York, and thousands more in cities across the globe. Last year, bare-legged revelers were spotted in cities across the U.S., as well as London, Prague, Jerusalem and Hamburg.

"As long as they adhere to our Rules of Conduct, we welcome all customers – pants or no pants," the New York Transit Authority said in a statement.

And WMATA, DC's transit authority, had just one tip for pants-free passengers in the nation's capitol: "Please make sure you're wearing clean underwear."