Anal Puckering

From this angle you can see that the anus is effaced and relaxed. The bound female has submitted to the bondage. Now watch closely as the ball gag is applied and you will notice that her anus contracts involuntarily during the panic of gag reflex. This involuntary contraction is useful during anal sex. If you want her to squeeze up tight, simply insert a finger into her throat and feel the contraction on your cock. It also causes wide eyes and runny mascara.