Sunday January 10 was "No Pants Day," on which people around the world ride the subway, well, with no pants. In Jerusalem, a city without a subway, several Jerusalemites rode pantless on the city's light rail.
According to AFP, 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.