From Shanghai to New York, Transit Riders dropped their pants on trains and subways Sunday for the 12th and 13th annual “No Pants Day.” This day was created by a group of pranksters called “Improv Everywhere.” regarding to these pranksters No Pants Day is all about good fun. This year, 60 cities in 20 countries are participating to cause chaos and joy in public places. Here we have put together some photos of commuters braving chilly conditions, while keeping a straight face on No Pants Day. Have a look at the funny photos. Enjoy!