Beastly Muscle Fun. We ask you, when it's cold and snowy in the Rock Mountains, what do Muscle Girlz do? Why, the go to the gym half naked and play with their muscles, of course! Laurie Larson and Iron Liberty show off their strength and thick muscularity with one legged donkey calf raised, double pec bouncing, ab crunches, ab vacuuming, and more! It's enough to knock you out of your seat! Laurie Larson is a true Beastly Muscle Girl. She proves it with some awesome lifts 'n carries, domination wrestling, tag team wrestling, and girl/girl muscle fun!.