People taking part in the annual international "No Pants Subway Ride" day travel on the Jerusalem light train on January 10, 2016.
The "no pants" day is now marked in over 60 cities around the world. The idea behind it is that random passengers board a subway car at separate stops in the middle of winter, without wearing trousers. The participants wear all of the usual winter clothing on their top half such as hats, scarves and gloves and do not acknowledge each other's similar state of undress. / AFP / MENAHEM KAHANA (Photo credit should read MENAHEM KAHANA/AFP via Getty Images)