As much as I liked my sister humping me, I have to say it was even better now that I was able to plow her. The snap of my hips against her backside. Running my hands all over her bare skin. Seeing her writhe beneath me. Knowing that I was doing this to her. Taking her there. It brought me to another level.

Unfortunately, it also brought me to another level. I'd have fucked Betsy like that forever if my body had let me. But there was an endpoint to my endurance and, as I told my sister, it was encroaching fast.

"Getting... close..." I warned her.

"Ohhh, uhhn. Me...