PHILADELPHIA — Thousands of bicyclists in various stages of undress pedaled their way around the city Saturday to promote fuel conservation and positive body image. The Philly Naked Bike Ride on featured people sporting masks, underwear, body paint, glitter or nothing at all. A lot of riders wore just their shoes. Debbie Kaighn, who was riding in the popular annual event for the third time, wore shoes, socks and body paint.