Participants gather in the Union Square subway station during the annual No Pants Subway Ride on January 8, 2012 in New York City. The annual event is staged by the group Improv Everywhere which encourages people in dozens of cities worldwide to discard their pants while riding the subway. (Photo by Mario Tama/Getty Images)

(L-R) Models Lindsay Ellingson, Adriana Lima, and Doutzen Kroes attend the Victoria's Secret Angels Valentine's Day Event at Victoria's Secret, SoHo on February 8, 2012 in New York City. (Photo by D. Dipasupil/Getty Images)

Grand Champion Oakhurst Crusin' in Chrome, an Australian Shepard, poses backstage at the Westminster Kennel Club Dog Show after winning best of opposite s*x on February 13, 2012 in New York City. (Photo by Michael Nagle/Getty Images)

Kat Von D attends her first solo art show “New American Beauty” at Sephora Antara store on March 1, 2012 in Mexico City, Mexico. (Photo by Victor Chavez/Getty Images For Sephora)

Police take part in a role play exercise as they clear a protest on top of a train during training on March 6, 2012 in Oxenhope, England. A new team of specialist officers set up to deal with searches and policing at a height, such as on top of a train, undergo training exercise in Oxenhope, West Yorkshire. (Photo by Bethany Clarke/Getty Images)

The Brooklyn Bridge is seen after a crane pulled by a tug boat on the East River slammed into scaffolding beneath the Bridge on March 13, 2012 in New York, NY. According to reports, no damage was done to the structure of the bridge. (Photo by Allison Joyce/Getty Images)

These Filipino icons of ingenuity were originally re-crafted from abandoned US army jeeps after the second world war, and helped to establish a new system of urban transportation. Jeepneys are being phased to help ease city congestion, but the move will also cause unemployment for experienced drivers – and higher fares for commuters. (Photo by Claudio Sieber/Barcroft Media)

A Polisario fighter sits on a rock at a forward base on the outskirts of Tifariti, Western Sahara, September 9, 2016. At a rocky outpost in Western Sahara, a new generation of soldiers who have never known war are mobilising as tensions resurface in one of Africa's oldest disputes after a quarter century of uneasy peace. (Photo by Zohra Bensemra/Reuters)