No pants on the subway
Young people, stripped to their underpants, wait for the subway as they take part in Romania's first edition of the "No pants subway ride day" organized in Bucharest, Jan. 11, 2015.
The No Pants Subway Ride is an annual event staged across major cities of the World every January. The mission started as a small prank with seven guys and has grown into an international celebration of silliness, with dozens of cities around the world participating each year.
London
People take part in the annual "No Trousers On The Tube Day" event in central London, Jan. 11, 2015.
New York
A participant in the No Pants Subway Ride waits for a train next to police officers in New York subway in new York City, Jan. 11, 2015.
The No Pants Subway Ride was started in 2002 by Improv Everywhere in New York, the goal is for riders to get on the subway train dressed in normal winter clothes without pants and keep a straight face.
New York
A participant in the No Pants Subway Ride waits for a train in his underwear in New York subway in New York, Jan. 11, 2015.
New York
A participant in the No Pants Subway Ride enters the New York subway in her underwear, January 11, 2015.
Prague
Passengers not wearing pants stand in a subway train during the "No Pants Subway Ride" in Prague, Czech Republic, Jan. 11, 2015.
Bucharest, Romania
Passengers without pants sit inside a subway train during "The No Pants Subway Ride" in Bucharest, Romania, Jan. 11, 2015.
The event, the first organized in Romania, is an annual flash mob and occurs in different cities around the world.
Mexico City
A passenger without pants waits for the subway train during "The No Pants Subway Ride" in Mexico City, Jan. 11, 2015.
The event was the fifth organized in Mexico.
Mexico City
An elderly woman, left, looks at a man who lacks his pants during the annual "No Pants Subway Ride" at a subway station in Mexico City, Jan. 11, 2015.
The annual No Pants Subway Ride began in 2002 in New York as a stunt that organizers call "an international celebration of silliness," and has spread to other cities.
Washington, D.C.
A participant in the No Pants Subway Ride D.C. waits for a train at the Gallery Place - Chinatown station in Washington, D.C., Jan. 11, 2015.
New York
Participants take part in the "No Pants Subway Ride" in New York City, Jan. 11, 2015.
New York
A participant in the "No Pants Subway Ride" takes the Q train from Times Square in New York City, Jan. 11, 2015.
New York
Participants stand against as wall as they take part in the "No Pants Subway Ride" in Greenwich Village neighborhood of New York City, Jan. 11, 2015.
New York
A participant takes part in the "No Pants Subway Ride" inNew York City, Jan. 11, 2015.
New York
A man, wearing a bear costume, knits as he takes part in the "No Pants Subway Ride" in New York City, Jan. 11, 2015.
New York
Bottomless commuters participate in the annual No Pants Subway Ride in New York City, Jan. 11, 2015.
New York
People look at a participant taking part in the "No Pants Subway Ride" in New York City, Jan. 11, 2015.
New York
People, taking part in the "No Pants Subway Ride", play with hula hoops in New York City, Jan. 11, 2015.
New York
People take photos of a participant taking part in the "No Pants Subway Ride" in New York City, Jan. 11, 2015.
New York
A man looks at a participant taking part in the "No Pants Subway Ride" in New York City, Jan. 11, 2015.
Seattle
A man in his underwear waits to board an arriving light rail train during the annual No Pants Light Rail Ride organized by the Emerald City Improv group in Seattle, Washington, Jan. 11, 2015.
Seattle
A participant shows off his underwear flask pocket during the annual No Pants Light Rail Ride organized by the Emerald City Improv group in Seattle, Washington, Jan. 11, 2015.