Joe was now fully hard and had lowered his pants so he could stroke his cock. He had never imagined such a thing - and it was an incredible turn-on! He had never seen his mother's breasts - or at least since he could remember it - and was amazed at how firm they looked. They were bigger than his sister's, but didn't sag much at all. He could not see them as well as he wanted because she was turned away from him. He caught a glimpse from time to time as Gary continued to suck them and maul them with his huge black hands.

As he watched, his...