Expect some strange sights on the CTA this weekend.
It's that time of year for the annual No Pants Train ride, scheduled for Sunday afternoon.
The idea originated with Improv Everywhere, a comedy group based in New York City, and has spread to various cities around the world, including Chicago.
Close to 250 people have confirmed their attendance, according to the group's Facebook invite.
Participants are asked to meet at the rooftop deck of the parking garage at 1210 W. Arthur Ave., and separate groups will take off their pants, jump on the Red Line and ride to the Roosevelt stop.
People are urged to wear socks, shoes, boots, coats, gloves, shirts, hats and of course, underwear -- just no pants. Thongs and g-strings are strongly discouraged.
Now all you have to do is figure out where to put your wallet, keys and cell phone.