Bostonites are familar with the tradition of the Santa Speedo Run, where men and women (but mostly ripped fellas) race through the streets, not for attention — ok a little of that — but for charity. The 15th annual Santa Speedo Run happened this weekend in the Back Bay, with thousands raised for the Play Ball! Foundation (we're serious!), which funds sports programs at inner-city schools. Check out pictures of the only-in-Boston event below.