With a smirk, the dominant sister commands her brother to kneel, his face inches from her throbbing pussy. He hesitates, but her firm hand on his head guides him. She grinds her wet folds onto his mouth, stifling his moans. His cock tents his pants, aching for release. She turns, presenting her tight ass, and he slips into her pussy from behind, doggystyle, fucking her hard and rough, just as she demands. Their bodies slap together, skin glistening with sweat, as they ride the wave of their forbidden desires.