On January 8, brave people from different cities around the world took their pants off to participate in one of the oddest annual flash mobs — the 16th No Pants Subway Ride. The event started off as a small prank conducted by seven people on the New York City subway back in 2002. Since then, it has grown into an international craze featuring dozens of cities. According to Improv Everywhere, a New York-based comedic performance art group and the organizer of the No Pants Subway Ride, tens of thousands of people in over 60 cities in over 25 countries around the world participated in the latest edition of the event.
People take part in the annual No Pants Subway Ride in Berlin, Germany, on January 8, 2017.
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© AP Photo / Kathy Willens
A passerby (far right) glances as participants in the 16th annual No Pants Subway Ride pose for photographs in their underwear in New York, USA, on January 8, 2017, after riding pantless in the subway.
People take part in the annual No Pants Subway Ride in Berlin, Germany, on January 8, 2017.
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© AP Photo / Czarek Sokolowski
Young people stand in line in the subway with no pants on as they join a global No Pants Subway Ride in Warsaw, Poland, on January 8, 2017, amid freezing winter weather outside.
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© AP Photo / Steven Senne
Participants wear no pants as they make snow angels in the Boston Common during the No Pants Subway Ride in Boston, US, on January 8, 2017.
Londoners stripped down for the pantless flash mob, too. The UK’s edition of the event – the No Trousers On The Tube Day – was held in the London Underground for the eighth time on January 8, 2017.
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© AP Photo / Kathy Willens
Participants wait for the train during the annual No Pants Subway Ride in New York, US, on January 8, 2017.
People do the Mannequin Challenge as they take part in the annual No Trousers On The Tube Day at Kings Cross station in London, UK, on January 8, 2017.
A woman without pants stands at a platform during the No Pants Subway Ride in Prague, Czech Republic, on January 8, 2017.
People take part in the annual No Trousers On The Tube Day on a London Underground tube train event in Central London, UK, on January 8, 2017.
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© AP Photo / Steven Senne
Participants (center and center left) perform a "silly walk" while wearing no pants as they cross a street during the event No Pants Subway Ride in Boston, US, on January 8, 2017.
Passengers without pants walk down the stairs during the No Pants Subway Ride in Prague, Czech Republic, on January 8, 2017.
Passengers without pants prepare for the No Pants Subway Ride in Prague, Czech Republic, on January 8, 2017.
People take part in the annual No Trousers On The Tube Day event in Central London, UK, on January 8, 2017.
A man without pants sits at a platform during the No Pants Subway Ride in Prague, Czech Republic, on January 8, 2017.
