"Yeah?" I whispered breathing heavily. Thrusting forward so she could see my balls dangle in the moonlight above her.

"Yeaahh, big brother," she sighed, "I like watching my brother stroke his hard cock while I finger my clit.."

"Yeah?" I stroked harder and pre-cum soaked my cock making tiny slapping sounds with each stroke.

"Yeah, big brother.. You like watching your sister finger herself while you stroke your big cock."

"Yeah, I do.."

"Yeah? You like jerking off over your sister while she fingers her wet clit? You like watching me grab my tits while I finger my pussy? Yeah, big brother??"

"Oh Kassie, you're amazing... Finger your pussy, little...