The man's eyes linger on his step sister's ample, hairy form as she lounges nearby, her cunt calling to him like a siren's song. He can't resist the urge to stroke himself, his cock hardening at the thought of burying it deep within her forbidden, wet flesh. She notices, her own hand drifting down to rub her clit, her eyes locked onto his throbbing member, as they both give in to their incestuous desires.