"mmm you feel so good Mommy..." He said as he continued to ploy into her, his lust filled eyes look up to his sister, practically licking his lips at the thought of doing this with his favorite sister. Hearing that she would likely love it only encouraged him further to push hard and fast into her. The feeling of her pussy around him was amazing. He never thought a woman with so many children, and apparently fucks so frequently could be this tight. She obviously keeps her body in shape though as his cock was throbbing inside her. He pushes his fill length into her, letting his hips press up against her backside as he massaged her breast and leans in to give mommy a searing hot kiss, clearly not one a child wold give his mother.