With one slow motion Kat pulled down both her pajama pants and her panties, sliding them past her curvy buttocks and down her shapely thighs, letting them fall along her legs until they were pooled around her ankles. Ben felt his cock twitch, a big dollop of pre-cum spurting into his boxers as he watched his sister reveal her upturned ass to him. For a second, his gaze was captured by the vision of Kat's puffy, glistening labia peeking from between her closed legs. But then, unavoidably, the sheer presence of her meaty bottom before his eyes magnetized his gaze and held it captive.

Plump and round, full and juicy,...