I still had two of the bedrooms in my Gran's house, one for working and studying in and one as my bedroom. Since the Saturday I had caught her with a dildo in her pussy and she had come to my room to have sex with me, I had shared her bed. I still had work to do for my university course and i still had my summer job so we would often leave the house at breakfast and not meet up again until late in the afternoon.
One Sunday, after a lazy morning in bed we were sat in the lounge, reading. Gran was carefully dressed and made up, as she always was during the day and I had dressed in smart slacks and a clean white shirt. We were all going for a family meal at a local bar-cum-restaurant and Gran insisted that everyone should be smartly dressed when, as she said, we were on show. Suddenly, Gran leaned forward.
"Will you do something for me?" she asked, her face reddening.
"Of course, if I can. What is it?" I answered her, puzzled.
"I can't say, it's, nasty and dirty." Gran carried on, "Watch this and you'll see."
Gran handed me a video in a plain case and almost scurried out of the room. I opened the case and saw that it had been played or wound forward until it was about half way through. I slid it into the player and switched the television on. A close up of a young woman filled the screen, sliding a hugely erect cock to the back of her throat and covering it in her slippery spit. As I watched, she pulled her head away and allowed the swollen knob to slide out from between her lips. Then she turned around lowered her self onto all fours, with her naked bottom lifted high in the air. The man positioned himself behind her and used his fingers to spread the cheeks of her arse, leaning over and spitting into the tight brown hole. Then he took hold of his cock at the base and rubbed his shiny knob in the spit, making it wet and slippery.
I watched, transfixed, as he pressed the head of his cock into the girl's arsehole, pushing slowly but firmly. The girl squealed in pain, but he just pushed a little harder. The camera drew back so that her face appeared on screen, twisted in a grimace of pain, before zooming in for a close shot of the rim of his knob as it slipped into her arse. She screamed as the head of his cock passed her ring and he slid right inside her, pulling her hips back, so that the whole length of his erect cock slid into her arse. Slowly he eased his cock in and out of her arse, the only sounds on the video being the slap of his balls against the cheeks of her arse and her animal grunts as he rammed the hard rod of his cock deep inside her. I could feel the swelling of my cock in my pants as I watched him thrusting his cock deep inside the girl's arse and listened to her screams turning to groans of lust.
The whole scene can only have taken a few minutes, until I saw a shudder ripple through the man's legs and heard him grunt as his cock jerked in the girls arse. He slowly pulled it out, revealing streaks of his cum mingled with brown matter from deep inside her arse. Stepping back he moved away from her to let the camera zoom in on her arsehole, as it slowly closed, with his cum oozing out. The screen dissolved to black and then the snow that signalled the end of the recording.
Turning the television and video off, I stood up and went into the hallway. The kitchen and dining room doors were wide open and I could see that she was in neither of those rooms. Turning to the stairs, I mounted them quietly. Both of the doors to my rooms were wide open and it was obvious that Gran was not in either of them. Her, or perhaps I should more accurately say our, bedroom door was closed and I quietly pushed it open.
Gran was sat at the dressing table, carefully applying a layer of glossy, bright red, lipstick. It was a much brighter, tartier, shade than she usually wore and the thought of her on her knees with my cock in her mouth and the lipstick smudged and smeared over the two of us escited me, making my cock jerk in my pants. I stood behind her and rested my hands on her shoulders as I leaned over her to whisper in her ear.