Teaching Sarah

Sarah showed up for the fisting lesson with silicone tits that caught the light every time she moved. The girl had one goal: stretch her cunt open as wide as it would go. Our assistant knelt between her spread thighs and worked her hand in slow, steady inches until knuckles slipped past that first tight ring. Sarah's breathing changed. She pushed down, taking the fist deeper, until her lips sealed around the wrist. Each twist and pull made wet sounds fill the room. Her clit stood stiff against the air, pulsing every time the fist turned inside her. The assistant never rushed. She curled her fingers, then opened them, testing how much Sarah could take before she begged for the next thrust.