To my credit, sort of, I didn't do much--I just enjoyed the snug fit of my hardening cock sandwiched between Mom's ass cheeks. I wasn't pushy. Part of my brain, whatever was left of it, worried that if I pushed too hard I'd turn her off or even shock her. But then Mom did something else that blew my mind. She scooted forward, slowly, slowly, but unmistakably, the groove of her pussy sliding over my hard, arched penis. I angled upward to aid her access until her sweet furrow settled over my cock's bulbous head. She stopped moving forward, but I noticed her hands clench on the tops of the...