This mature fellow it trying to do a few weights and slim down some. His niece's friend walks in and compares his belly to hers and she has a better idea for some exercise, which is to nail. She has always gotten his dick hard and to get an opportunity to actually bang her gives him an instant boner. She starts off by gobbling his knob and he lifts a couple of weights at the same time. However, the real workout begins when he gets to actually shoves his shlong deep into her gash and he pounds her in several positions.