A couple kisses while participating in the “No Pants Subway Ride” in Vienna, Austria,on January 10, 2016.
A girl rides on a train as she takes part in the No Pants Subway Ride in Bucharest, Romania, Sunday, January 10, 2016. The No Pants Subway Ride began as a stunt in 2002 in New York and has taken place in cities around the world since then. Organizers call it “an international celebration of silliness” and are organizing it in dozens of cities on Sunday.
Participants in the annual International “No Pants Subway Ride” travel on a London underground train in London, on January 10, 2016.
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.
A girl rides on a train as she takes part in the No Pants Subway Ride in Bucharest, Romania, Sunday, January 10, 2016.
Two men clad in colorful underwear walk up the subway steps during the 15th annual No Pants Subway Ride Sunday, January 10, 2016, in New York. The group event, a prank meant to amuse, has been going on since 2002.
The doors of a subway train open revealing pantless riders in colorful underwear during the 15th annual No Pants Subway Ride Sunday, January 10, 2016, in New York.
A subway rider glances behind him as two women disrobe to their underwear during the 15th annual No Pants Subway Ride Sunday, January 10, 2016, in New York.
Two people ride a 6 train during the 15th annual No Pants Subway Ride Sunday, January 10, 2016, in New York.
A man in boxer shorts and a woman wearing hosiery with a garter belt wait for a train at a Manhattan train station during the 15th annual No Pants Subway Ride Sunday, January 10, 2016, in New York.
Passengers not wearing pants take part in the No Pants Subway Ride in Prague, Czech Republic, Sunday, January 10, 2016.
Two girls prepare to take part in the No Pants Subway Ride in Prague, Czech Republic, Sunday, January 10, 2016.
A young couple participating in the No Pants Subway Ride head towards Union Square Station in New York City, Sunday, January 10, 2016.
A young woman participating in the No Pants Subway Ride holds her dog who is wearing matching underwear, on the subway in New York City, Sunday, January 10, 2016.
Passengers not wearing pants walk through a subway train transfer tunnel during the “No Pants Subway Ride” in Prague, Czech Republic, January 10, 2016. The event is an annual flash mob and occurs in different cities around the world in January, according to its organisers.
A passenger not wearing pants sits in a subway train during the “No Pants Subway Ride” in Prague, Czech Republic, January 10, 2016.
Passengers not wearing pants stand on a stairs during the “No Pants Subway Ride” in Prague, Czech Republic, January 10, 2016.
Passengers not wearing pants wait for a subway train during the “No Pants Subway Ride” in Prague, Czech Republic, January 10, 2016.
A mother and her son take part in the ‘No Pants Subway Ride’ in Berlin, January 10, 2016. The ‘No Pants Subway Ride’ is an annual event that has become a global celebration of bare thighs. The ‘celebration of silliness’ is designed to make other Tube riders smile.
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People take part in the ‘No Pants Subway Ride’ in Berlin, January 10, 2016.
A couple pose for pictures as they take part in the ‘No Pants Subway Ride’ in Berlin, January 10, 2016.
People take part in the ‘No Pants Subway Ride’ in Berlin, January 10, 2016.
People take part in the ‘No Pants Subway Ride’ in Berlin, January 10, 2016.
People take part in the ‘No Pants Subway Ride’ in Berlin, January 10, 2016.
People take part in the ‘No Pants Subway Ride’ in Berlin, January 10, 2016.
People take part in the ‘No Pants Subway Ride’ in Vienna, Austria, January 10, 2016. The ‘No Pants Subway Ride’ is an annual event that has become a global celebration of bare thighs.
A dog is seen on the train near people taking part in the ‘No Pants Subway Ride’ in Vienna, Austria, January 10, 2016.
People take part in the ‘No Pants Subway Ride’ in Vienna, Austria, January 10, 2016.
People stand on a train platform during the ‘No Pants Subway Ride’ in Vienna, Austria, January 10, 2016.
Participants in the annual No Trousers On The Tube Day ride the London Underground in London, Britain January 10, 2016.
Participants in the annual No Trousers On The Tube Day ride the London Underground in London, Britain January 10, 2016.
Participants in the annual No Trousers On The Tube Day ride the London Underground in London, Britain January 10, 2016.
Participants in the annual No Trousers On The Tube Day ride the London Underground in London, Britain January 10, 2016.
Passengers react to a participant in the annual No Trousers On The Tube Day, on the London Underground, Britain January 10, 2016.
Participants in the annual No Trousers On The Tube Day ride the London Underground in London, Britain January 10, 2016.
Participants in the annual No Trousers On The Tube Day ride the London Underground in London, Britain January 10, 2016.
An Israeli man waits without his pants on for travel on the light rail as he takes part in the third annual “No pants subway ride” event in Jerusalem January 10, 2016. Beginning in 2002 in New York by Improv Everywhere, this self described “prank collective” has spread to dozens of cities worldwide, with thousands of participants who aim to put a smile upon the faces of their fellow passengers.
Israelis travel on a light rail without their pants on as they take part in the third annual “No pants subway ride” event in Jerusalem January 10, 2016.
