That fad started in the tunnels of New York back in 2001, under the x-ray spec guidance of Improv Forever, an NYC-based "prank collective." Since then No Pants Subway Ride has gotten huge. More than 50 cities now join in the pranking mission, droppin' drawers in solidarity.
Dallas, refusing to be left out of the nudity magic, is also in the mix. On January 13, 2013, area residents will de-robe, from the waist down, on DART. Specifics to location aren't posted just yet, but you can join up -- or protect yourself from visual leg cheese -- by visiting the event's Facebook page.