You just knew by looking at her, sat on her rock staring at you with her hair, nostrils and ears quivering in suppressed excitement, that you were loo...king at a person quite unlike any you had ever met before in your life. It was uncanny, disturbing and oddly frightening and at that point I hadn’t even seen some of the oddest features of her anatomy.It was nearly impossible to tell how old she was. Superficially she seemed to have the body of a young woman no older than I was myself but there. A good mommy rims her daughter's asshole... ...a good mommy does any naughty, nasty, kinky things her daughter wants... “I'm your... your sex slave, Valerie,” I moaned, the words beating on my mind. I had to do it. I had to surrender to it. I knew it was wrong. I shouldn't submit, but... “I was a naughty mommy. I wasn't your sex slave. I made you my sex slave. Mitch, Mitch, you have to spank me.”CRACK!My eyes widened as the powerful impact of my husband's hand on my rump. The burning pain. I reached over and took his dick in my hand, "This need any attention today? Looks like it does." Oh, Sis, any time, any time at all. It always like whatever attention you give it. My sexy sister gets his full attention." So I see," I said as I heard Mom come out from the house. I looked back and she was topless."Well, I see you two are talking care of each other nicely. You want to rub some of that on me, when you finish with Michelle? Or, maybe when she finishes with you?"I figured I would. I was trembling and felt electrified, no nerves in sight. “So uh, what’s going on here?” Shocked into awareness, I looked up into my husband’s face. He wasn’t smiling, but he did have that look in his eyes. The one that says “I like what I see. Don’t stop.” I quickly introduced them, and he pulled a chair around to my other side, also pressing up against my now spread thighs. His hand went straight up and found other fingers already playing. He didn’t seem surprised, nor did he move his hand..