The weather made it a fine day for the ninth annual "No Pants Light Rail Ride" on Sunday afternoon. The event was organized by Arizona Improv.
Pepole took the light rail and left their pants at home.
Dozens of cities around the world participated in the event, ranging from Boston and Philadelphia, to Berlin and Prague.
This is part of the New York group Improv Everywhere's No Pants Subway Ride, which has been taking place since 2002 and has spread to several cities around the world.