“how big is 16 centimeters” stars an athletic blonde doing naked yoga, every pose in “how big is 16 centimeters” designed to show off her flexibility and glistening arousal. Downward dog in “how big is 16 centimeters” becomes downright obscene when she reaches between her legs, plunging fingers deep. The erotic tension of “how big is 16 centimeters” snaps when she holds a bridge position while making herself squirt across the mat in a gushing finale only “how big is 16 centimeters” captures so perfectly.