Fistfuck her taped butt

My girlfriend spreads her butt wide apart. This alone leaves her pussy and butthole wide open. Two large gaps between her legs. It's a great sight. I take construction tape and fix her buttocks in this position. The holes are easily accessible. Now I can stretch her tight ass even further and press my whole massive man's hand into the rosette. What a great feeling when the sphincter wraps around my wrist and slowly becomes softer during fisting. It squirts heavily. A waterfall!