“If you wouldn’t mind, Sir – I need to spend some quality time with my girlfriend, can we schedule it first thing, next week?”“Certainly, my...boy. See you all then. Goodbye.” He left.Skipping into the room, Becky grinned and said, “Your girlfriend, do I know her?”“You are her,” I said as her father had followed her into the room.“Ricky,” Mr. Knowles said. “You won’t let him take you from here, I hope?”“Absolutely not, Sir, I have too much keeping me here,” I said giving Becky another. I had no idea (although I did have an opinion) of how experienced she was. Nor of what she liked to do, beyond driving me crazy with all her flirtations and out and out exhibitionistic tendencies. Right now, none of it made any difference. I wanted to fuck her. I needed to fuck her. Thankfully, she seemed to be on the same wave length. “It’s pounding time, Mister Muscle.” She growled, gasping for breath before she plunged her frisky tongue once more into my open mouth. See what I mean? I tried. With four of us all on different schedules, it was almost impossible for us to all find a time when we could go visit for any significant amount of time. Gramps, on the other hand, had nothing but time if he wasn't on a job somewhere.So we were familiar with the house. It had three bedrooms. Gramps used the big one. The last time we'd been there, one of the smaller bedrooms had his desk and papers in it, which was boxes of stuff from his former career as a detective. The other one had odds and. My hands left my side and my left arm wrapped around her chest. My left hand closed on her sensitive right tit and nipple and my right arm draped across her abdomen; my right hand started worrying her swollen clit as I tried to force myself the rest of the way into her. Tanya's head flew back, “Oh Fuck! God you're too much!” Her complaints aside she continued the downward pressure and she started gyrating her hips. My sister was slick with sweat and I could feel her tremble as she continued.