Two young boys play besides a lake , throwing rocks into the water .
Two boys compete to see who can skip rocks across the lake better .
Two young boys play besides a lake, throwing rocks into the water.
Two boys compete to see who can skip rocks across the lake better.
The boys are not necessarily competing or skipping rocks. They appear to be throwing them overhand.
The boys are not necessarily competing or skipping rocks . They appear to be throwing them overhand .