Dads are as different as the children they raise, and the motorcycles they ride. Maybe your pops is a former racer, with a crooked gait from too many crashes and more war stories than Steven Spielberg. Or he could be the other end of the biker spectrum, ink on his neck and scars from bar fights. More likely, your father figure is somewhere down the scale of characters, a mild-mannered citizen during the week, filing people's taxes and wearing a collared shirt. Maybe that shirt covers up the tattoos he got when he was a young buck—who's to say? Not us.