"It's ok, you can call them your balls," said mom, picking up on my stammer. "I don't mind if you use normal slang words for our body parts -- I did m...ntion that to you before," said mom reassuringly.My dick stirred again."In my balls I mean," I said, going along with her."And do you still feel better after cumming several times by the end of the day?" Yes," I replied."Well, let's see what news Dr. Taylor will give us this week. You know she is going to let us have your blood tests results on. " At her command, Amanda complies without thinking, she brings it to her mouth and begins to lick the tip in the shape of an acorn she rotates with her tongue all around then begins to lick it along its entire length starting to push a few small moans of envy relaxing in the chair. "Yes that's it sucks it like it's my cock." Amanda even more excited upon hearing these words opens her mouth and begins to gently insert the toy and close her lips over it to start sucking it wildly as the slime. In the last story, she had indicated that “she owed me and always repaid her debts”. 

I was content to let the campfire event be the last. After all she WAS my niece and had no right to expect more. I was wrong. 

That week was blistering hot at our place. Thankfully, my pool was large, clean and we all used it all day long with drinks, listening to music and playing with my niece’s son in the crystal clear water. Kim, my niece, was wearing her usual one piece bathing suit, self conscious. Her hands wet with fluids, she sucks me hard and deep in her mouth. I could feel the orgasm that I had held off so long rising up in an uncontrollable wave. My fingers continued to move unconsciously inside of Denise as she photographed, but then I noticed my hand getting very wet and she came over and over. She cried out as her camera went crashing to the floor and then I was surprised by the sudden realization of my own orgasm. Like a Volcano erupting from the depths of the earth cum erupted.