Today is the big day - the day of the The No Pants Subway Ride, an annual global event started by Improv Everywhere in New York City in 2002, wherein participants strip down to their underwear but otherwise carry on with their normal daily routine.
Lindsay Lohan refers to this simply as "Monday."
There's even a UK equivalent, the No Trousers Tube Ride (above).
That's just hilarious.
If you've ever dreamed of walking around in public with no pants on - and you're not making a living in the World's Oldest Profession - then get out there and do it.
Just have the bail money ready just in case.