Musclemommy is at home with her step-son Kevin and his girlfriend Addie....she asks Addie if she wants to go down in the basement to work out. Musclemommy is pretty pervy herself so she makes Addie strip naked for the workout....she shows her how to do shoulder presses and bicep curls and they talk about how much Kevin likes muscles and also about how a certain trainer gave Addie an injection to make her grow. Musclemommy knows exactly what that is so she also gives Addie a special 'growth injection'. # muscular women, #female muscle growth #transformation #comparisons #workout #flexing # nude... Show more