‘No Pants Subway Ride’ hits Madrid Metro

Nearly 100 people took to Madrid's metro on Sunday without one vital item of clothing: their trousers.

'No Pants Subway Ride' hits Madrid Metro
People taking part in the 'No Trousers On The Tube Day' event in central London on January 11, 2015. Photo: Leon Neal

The brave souls were taking part in the No Pants Subway Ride that is celebrated in various cities across the world at the same time.

The tradition was started in the USA by Improv Everywhere, a New York City based 'prank collective'.

According to the Improv Everywhere website the idea behind the No Pants Subway Ride is simple:

"Random passengers board a subway car at separate stops in the middle of winter without pants. The participants behave as if they do not know each other, and they all wear winter coats, hats, scarves, and gloves. The only unusual thing is their lack of pants."