One does not change the core lightly. If at all possible you leave the robots core functions alone, one tiny error with the core and you can corrupt t...e bots ability to do any task.There are only a small handful of people who understood exactly how the core functions worked. My dad was one of the few who completely understood all aspects. A few more understood some of the aspects, but not the whole ability of the core.My Patti kept going, driving the shaft into me again and again. I looked up. Eventually the birthday girl arrived.As soon as she came in the door we all yelled, "Happy Birthday!"She made a beeline for me and tried to crush me in a hug."Thanks, Big Brother." No problem. We have a lot of fun stuff planned, and I think you're gonna have a great day." I already am," she said and tiptoed up to kiss me on the cheek.She pushed past me and joined her friends. Thankfully, I got to sit back and watch since Zoe was taking the lead. We didn't want to miss too much of the carnival. Her pelvic muscles started to quiver, her body twitching uncontrollably with sensual spasms, her stomach contracting as she was trying to hold on with her orgasm.But, Barry was spewing hot cum deep inside her and his strokes were coming fast and hard, rocking her towards another massive orgasmic climax.Her legs wound up around his back, trying to pull him even deeper inside her while she sought my lips harder. She was moaning in sheer pleasure, her eyes moistening as she violently convulsed. I settled in to a routine and it was all fine.One Saturday I finished at midday and prepared to leave. I said good bye to the Walden but halfway out the door I remembered I had forgot to dust the furniture in the dining room. Not wishing to get into trouble I went back inside the house. Mr and Mrs Walden had disappeared so I breathed a sigh of relief that I didn’t need to explain why I was back. Grabbing the duster I set about finishing the dusting. I heard Goldie growling and looked around but.