People in cities across Europe took off their trousers in public today for the annual ‘No Pants Subway Ride.’ The 17th edition of the worldwide trouserless train ride has seen events organised in European cities including Copenhagen, Prague, Zurich, Lisbon, London and Berlin. Hundreds of people had signed up to join the events in Europe, pledging to take off their trousers en masse while travelling on the underground. The event was started in 2002 by New York-based comedy collective Improv Everywhere. While the first ‘No Pants Subway Ride’ in New York had just seven participants, the event has grown each year, with organisers expecting thousands of people to take part in more than 60 cities today. Improv Everywhere says there is “no agenda for the event apart from a desire to make others laugh and smile.” Participants and passersby shared photos of the scenes in London under the hashtag #NoTrousersTubeRide. But while the event saw dozens turn out in the British capital, for other European cities it was a quieter affair. Organisers in Zurich, Switzerland, told Euronews that just 11 people joined their event, including seven locals, three from Germany and one from Ukraine. “But we had lots of fun,” they said.