Risking chilly legs in the cold German winter, subway riders in Berlin, Hamburg, Stuttgart and Munich left their pants behind at the U-Bahn doors to participate in the annual international "No Pants Subway Ride."
The rules of the event, organized by comedic performance group Improv Everywhere, are simple: Take off your pants, but leave all other clothes on and sit on the subway as if everything is normal. Fellow participants are also not supposed to acknowledge one another on the train.
"The goal was to bring some fun into everyday life and make people smile," said Hamburg event organizer, Ingo Drzewiecki. "Underwear will be worn, don't be shocked."
The first No Pants Subway Ride was staged in New York City by just seven people in 2002, but has grown to include 60 cities in 25 different countries around the world.
More than 250 people indicated on Facebook they would attend the event in Berlin and 57 said they attended the one in Hamburg.