“Ding! It’s another picture from the first guy, the one who wants Dave to give his wife something he can’t. This time his wife is on her knees, wearing lingerie that covers nothing. ‘Gosh, Dave says, ‘this guy really wants to see his girl get f*cked.'” (Wow, in my world “ding” means one of my kids left the fridge door open.) John H. Richardson shares the secret life of America’s greatest swinger.