No pants? No problem. Hundreds of fearless Valley residents lost their pants and found themselves boarding light rail trains on Sunday, January 13, during this year's No Pants Light Rail Ride Phoenix. The annual urban prank involves folks going pantsless in public and riding the Valley Metro Light Rail for fun, much to the shock and amusement of other passengers. After departing from multiple points across the Valley, riders headed to downtown Phoenix for a post-ride party at The Churchill.