Back in 2002, seven New Yorkers decided to ditch their pants (trousers, but I’m using the official name for it before you get all pedantic and complain about me using American colloquialisms) and take a ride on the New York Subway. 12 years later and the tradition of the No Pants Subway ride has expanded to include more than 4000 participants in over 60 cities all over the world.

Here are 22 pictures of some of these people taking part in it. It’s an annual event so if you didn’t manage to make it this year, then there’s always hope for you next year. Make sure you wear your best birthday suit.

☛ More Naked People: Naked Man With Huge Afro Goes On Rampage Around San Francisco Subway Station

Buenos Aires

Hong Kong

Beijing