Grabbing her hair again, I immediately resumed fucking her hard and fast, but instead of spanking her, I played with the base of the plug. The fact she had an orgasm within a couple of minutes was no longer a surprise. "Hannah, come squeeze her nipples," I instructed.

"Daddy," Katie moaned, "Too much..."

"You're going to cum again and again until you pass out. I'm thanking my little girl for caring about me, sweetie."

Hannah wandered over, kneeling before her twin sister, leaning down to kiss her first. I stopped for a moment to watch. It was such a tender, loving kiss, I couldn't help smile. Then she reached under...