C-Train riders in the downtown core got an eyeful on Sunday afternoon as a handful of hardy souls shed their trousers and jeans to participate in international "No Pants Day".
The Calgary group hopped on the train near city hall and rode up and down the free zone for about an hour.
Participants are encouraged to act normally and keep a straight face while they are being stared at by other passengers.
The quirky group Improv Everywhere started the event in 2002 in New York City and since then it has grown to include 42 cities in 15 countries.
"It's the second one in Calgary," said event organizer, Thomas Terashima, "we had one last year, exactly a year ago."
Calgary Transit and city police say they had no problems with it as long as the participants were dressed and decent.
Improv Everywhere is encouraging participants to upload their pictures and stories to their Website for all to enjoy.
