Undies ground

A participant of "No Pants Subway Ride" stands in a subway train in Mexico City on Sunday, January 13, 2013. The event is organised by Flashmob Mexico where participants have to strip down to their underwear as they go about their normal routine, said organisers. Mexico City - Hundreds of people in Mexico City doffed all but their smalls to take part in the “No Pants Subway Ride” on Sunday, just for laughs, around the world. Young and old, men, women and children got in on the 12th annual round of the prank held once a year in 50 cities, the well-ventilated movement said on its website. It was the third time people in Mexico City took part in the underwear fununderground.