NEW YORK (CBSNewYork) — Participants were out and about in the subway on Sunday afternoon causing a scene dressed in not much more than their underwear.

The 10th Annual No Pants Subway Ride took placed from 3 p.m. to 6 p.m. The group that organized the event — Improv Everywhere — said about 10,000 people took part in New York City.

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1010 WINS’ Sonia Rincon reports from Union Square

There were several meeting points across NYC, including Hoyt Playground, Foley Square, Flushing Meadows Park and Bushwick Park. All routes eventually converged on Union Square.

Photo/Justin Schrager, 1010 WINS

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Participants were divided up into groups and had a team leader. Those involved were also instructed not to take photos or talk to one another on subway trains.

“”This is funny cause one unusual thing is going on — there is no pants,” one of the organizers, Jesse Good, said.

“We don’t need to compound that and put a joke on a joke.  We don’t need to do stretching in people’s faces, we don’t need to do pole dances,” he said to the amusement of participants.

Organizers advised the pants-less riders to say they “forgot to wear pants” or that their pants were “getting uncomfortable” if confronted about why they had removed their pants by fellow straphangers.

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Similar events took place in 24 countries and at 50 regional subways, including Barcelona, Mexico City, London and Amsterdam.