From Charlie Todd of Improv Everywhere:
SAVE THE DATE!
The 11th Annual No Pants Subway Ride will take place on January 8 in New
York and other cities around the world.
More info is on our site here:
http://improveverywhere.com/2011/12/05/save-the-date-no-pants-subway-ride-2012/
If you are unfamiliar with this tradition, you can read the history here: The No Pants Subway Ride.