After managing to sneak into his step-sister's room while she was in the shower, he couldn't help but stare at the alluring curvature of her plump derriere peeking out from beneath the lacy fabric of her thong. He knew he shouldn't be doing this; it was wrong. But his cock had other ideas as it quickly hardened in his pants.
As she stepped out of the shower and began drying herself off, oblivious to his presence, he couldn't tear his eyes away from her supple, jiggling flesh. He could hear her softly humming a tune as she absentmindedly ran the towel over her sleek, wet skin. Unable to resist any longer, he crept up behind her and wrapped his arms around her waist, pressing his hardening cock against her wet, soft folds.
She let out a low moan, arching her back to grind against him.
