NY subway riders strip to underwear for 'no-pants day'; some grin

The laughter-filled ritual started in the largest U.S. city in 2002 and has expanded nationwide and overseas, from Atlanta, Chicago and Dallas to London, Berlin, Prague and Vienna.

New Yorkers strip down for No Pants Subway Ride [PHOTOS & VIDEO]

No pants on the subway

No pants subway ride kicks off this weekend

No Pants 2k6 - Improv Everywhere

Flashers shed skirts, trousers

Thousands of straphangers across US strip down to their UNDERWEAR for No Pants Subway Ride 2020

No pants subway ride 2014: Commuters drop their pants across the world – New York Daily News

Hundreds strip in NYC for No Pants Subway Ride

No pants subway ride 2014: Commuters drop their pants across the world – New York Daily News