She grinds experimentally for a moment before he finally loses his patience. His hands grip onto her ass as he pulls her down onto him over and over, his hips thrusting upward. The sensation sends her eyes rolling back into her head. She reaches for him, unsure where else to put her hands, and desperately needing something to cling to. She places her thumb in his mouth and he bites gently, his thrusts increasing in pace and depth as she leans further against his chest. 