I knew if I kept grinding my cock like this on my aunt's body I was gonna cum… and I was ready to do it.
I didn't hold back. I wanted to paint my aunt's body with thick white cum. The pressure in my balls had been building from the moment I first touched her. Now, with her thick ass pushed out against me and her soft body completely at my mercy, I couldn't stop myself anymore.
All of a sudden I got rough, holding her wide hips and grinding my cock on her ass cheeks harder. My fingers dug deep into the soft flesh of her child-bearing hips as I pulled her back against me and thrust forward with short, hungry strokes.
The thick shaft dragged heavily through the soapy crack of her ass, the swollen head smearing more precum across her lower back.
"Slow down, Alex…" Aunt Stacy glanced back at me, completely at my mercy. Her voice was soft and shaky. She could feel how rough and desperate I had become, but she didn't try to pull away.
