Jill is one of those girls whose calves are so big and so developed she can make them contract into hard balls of muscle almost at will. That is precisely what she does in this clip, straddling an antique chair with her knees bent at an acute angle so all she has to do is flex, flex, flex to the throbbing rhythm and blues beat you hear in the background. She bets you will be throbbing too, when you watch her pop her calves. First you see her big left calf, pulling into a heart shape with each beat, then the camera swings around to the right, then you see her calves from the front with the fore... Show more