BBB Etymology - Whippersnapper
One of the easiest skills learned by an inexperienced cowboy is that of snapping a black snake whip. Those who couldn't bulldog a steer or rope a maverick prided themselves on being able to strut into a town while calling attention to themselves by snapping their whips. Only youngsters who didn't even carry guns followed this practice. But it was common enough to lead people who never worked a trail herd to adopt whippersnapper as the perfect label for any brash, but unskilled, beginner.