NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/The New York Post)





Participants in the annual International "No Pants Subway Ride" travel on a London underground train in London, on January 10, 2016. Started in 2002 with only seven participants, the day is now marked in over 60 cities around the world. The idea behind "No Pants" is that random passengers board a subway car at separate stops in the middle of winter, without wearing trousers. The participants wear all of the usual winter clothing on their top half such as hats, scarves and gloves and do not acknowledge each other's similar state of undress. (Photo by Leon Neal/AFP Photo)





Participants in the annual International "No Pants Subway Ride" arrive at a train station in London, on January 10, 2016. (Photo by Leon Neal/AFP Photo)





People taking part in the annual international "No Pants Subway Ride" day travel on the Jerusalem light train on January 10, 2016. The "no pants" day is now marked in over 60 cities around the world. The idea behind it is that random passengers board a subway car at separate stops in the middle of winter, without wearing trousers. The participants wear all of the usual winter clothing on their top half such as hats, scarves and gloves and do not acknowledge each other's similar state of undress. (Photo by Menahem Kahana/AFP Photo)





Participants in the No Pants Subway Ride DC, wait to ride the Metro on January 10, 2016 in Washington, DC. The No Pants Subway Ride is an annual event which was started in 2002 by Improv Everywhere in New York. (Photo by Andrew Caballero-Reynolds/AFP Photo)





A participant in the No Pants Subway Ride DC, rides the Metro on January 10, 2016 in Washington, DC. (Photo by Andrew Caballero-Reynolds/AFP Photo)





Participants in the No Pants Subway Ride DC, wait to ride the Metro on January 10, 2016 in Washington, DC. (Photo by Andrew Caballero-Reynolds/AFP Photo)





A participant in the No Pants Subway Ride DC, jumps on a pole while riding the Metro on January 10, 2016 in Washington, DC. (Photo by Andrew Caballero-Reynolds/AFP Photo)





A participant in the "No Pants Subway Ride" stands on a New York City subway platform January 10, 2016 in New York. The "No Pants Subway Ride" is an annual event started in 2002 by Improv Everywhere in New York, the goal of which is for riders ride the subway train dressed in normal winter clothes without pants while keeping a straight face. (Photo by Timothy A. Clary/AFP Photo)





A participant in the "No Pants Subway Ride" stands on a New York City subway platform January 10, 2016 in New York. (Photo by Timothy A. Clary/AFP Photo)





Participants in the "No Pants Subway Ride" walk toward a New York City subway January 10, 2016 in New York. (Photo by Timothy A. Clary/AFP Photo)





An infant sleeps in a crib during the "No Pants Subway Ride" on a New York City subway platform January 10, 2016 in New York. (Photo by Timothy A. Clary/AFP Photo)





A participant walks before police during the "No Pants Subway Ride" on a New York City subway platform January 10, 2016 in New York. (Photo by Timothy A. Clary/AFP Photo)





Participants in the "No Pants Subway Ride" stand on a New York City subway platform January 10, 2016 in New York. (Photo by Timothy A. Clary/AFP Photo)





A participant in the "No Pants Subway Ride" stands on a New York City subway platform January 10, 2016 in New York. (Photo by Timothy A. Clary/AFP Photo)





Participants in the "No Pants Subway Ride" stand on a New York City subway platform January 10, 2016 in New York. (Photo by Timothy A. Clary/AFP Photo)





NYC no pants subway ride. Thousands of straphangers took their pants off for the 15th annual "No Pants Subway Ride" hosted by Improv Everywhere. People gathered at seven meeting points throughout the five boroughs at 3PM. All participants met up at Union Square around 5PM to and had a pant-less celebration and the afterparty at Webster Hall. (Photo by Paul Martinka/Splash News)