I was 17 and the old man wanted my ass SeXStoRY

'Where are the curtains', I asked, he just smiled and said, 'It's OK, the glass is polarized, people can't see in'. I found it hard to believe, so to test his theory I walked outside and looked from the street, sure enough, it was dark and I could not see inside. After he left I continued unpacking, laying my clothes out on the bed, then I stripped off, deciding to shower before going out. I studied myself in the mirror and as I did so, the mood struck me, so I decided to entertain myself before showering and walked to the bed and took out my vibrator. As the bed was full of my clothing I decided to sit on the chair and as I turned around my heart almost stopped, the owner of the flat was outside my room, and I instinctively dove for cover, before realizing he could not see in, so I walked into view and felt an urge, a spasm of naughtiness, exposing myself to his view, suddenly my libido, surged and my hand dropped between my legs and I started to stroke my clitoris and masturbate, in full view of the glass door. I watched him intently, he was working in the small garden, plucking this and that, taking some photos, occasionally pointing in my direction, to which excited me, as I imagined he was shooting me as I continued to masturbate unabated, moving closer to the plate glass, my erect nipples brushing the cool glass. His presence excited me to orgasm in front of him, my serene and very personal moment, was witnessed by him, even if he did not know it, and as I wiped myself he turned and picked up his video camera, that had been lying on the table, pointing directly at my glass doors. He turned the viewfinder around and looked at it, and as he did so a huge smile broke across his face, then he looked directly at me and doffed his cap, with a slight nod of his head, he turned and walked off. 'What the Fuck', went through me head, I pulled my summer dress over my head and went back outside to where he was standing, there was something different, he had pulled a canopy out, blocking the sunlight from the doors, and as I looked I could see inside, and the realization he had been videoing me, in my private moment, left me both angry and shaken. I knocked his door firmly, 'Come in', he called back, and I entered, about to give him an ultimatum, but as I entered he remarked, 'Just the person'. 'What', I said, 'I was about to call the police', he calmly retorted. My head swam I could not think straight for a moment, 'I have you on film, indecently exposing yourself and committing a degrading sex act, in view of the public'. I was shaken, I could not answer this charge, it was all true, 'But', I stammered, 'You told me people could not see in', I was confused, 'No I told you the curtains were being laundered and they would be fitted shortly, but you said it was OK, not to hurry', the bl**d drained from my face, he was lying of course, but it mattered not, as it was his word against mine, and he had the evidence. I cursed my naivety, I was s*******n and venturing into the big bad world, and I suspected it cant get any badder than this, 'Ok, you win', I said, relinquishing my soul to him, somehow realizing this was going to be a very sexual week ahead, 'Good girl', he replied, 'Just take your little dress off and go lock the door', and as walked nude to his office door I could hear him undress, I turned the key in the lock and turned back to him, he was nude and sticking out, he was a very big man, down there, and as I looked he scooped some cream from a jar and massaged it onto himself, 'Lets be having your tight little asshole over here', and he patted his swollen penis. I walked to the table and laid myself face down over one corner, my legs either side, 'Pull your cheeks apart for Daddy', and as I held myself open he smeared my anus with the same cream, then inserting his fingers inside he pulled me open, 'You fucking tart, you bin gagging for this', his whole demeanor changed, he became nasty and vile, each powerful thrust into me, racking me with extreme pain, I thought of my friend Cindy's advice, 'Once he is in you relax, it will go easier, I promise', fucking hell Cindy this mans cock is huge, I felt he was tearing me a new one, then he thankfully came, still inserted of course, and he laid across me, feeling under my chest and cupping my breasts. We lay like that for ten minutes, I know because I was watching the big clock opposite the deck, and as I watched I could feel every twitch his cock made inside me, he was big and staying that way. He pushed his weight onto my shoulder as he eased himself upright, his cock still in my ass, 'Can you take it out', I asked pleadingly, 'Sorry baby, Daddy likes your asshole', and at that he pulled me upright and held me close to him, 'Lets get in front of the mirror', and at that we shuffled across to the full length mirror, where we studied ourselves, his wizened old face contrasting with my youthful bloom and flowing blond locks. He played with my breasts and I felt a huge discomfort with his huge cock firmly embedded in my ass, I felt like I wanted to shit and involuntary squeezed him, my normally tight sphincter muscle was stretched around a three inches in circumferential cock, never mind the ten inches inside, 'Hmmmmmm, baby keep doing that, Daddy like it', so now I had the squeeze him repeatedly, 'Play with your pussy, like you did on cam in the room', a short reminder to the reason why I was in this predicament, and so we stood, me masturbating and squeezing him with my ass, and he tweaking and pulling my breasts and nipples. I cant say when it changed, but the feeling changed, I was getting feeling back there, maybe Cindy was right all along, there was a nice felling, even my clitoris had sprang into life, I was deriving new pleasures, and my body responded in kind, he felt the change in me, each twist and tweak on my nipples produced a gasp. 'Thats a good girl, Daddies baby', I liked him calling me his daughter, it had a perverted tone to it, an added twist to the anal penetration, and I writhed against him, each move making him harder. I put my hand on my pubic region, his cock was brushing against me from the inside, bringing extreme pleasure, 'Oh my God, what are you doing inside me', my legs were buckling and I was finding it hard to stand up, 'It's you G-spot baby', he breathed into my ear, 'Daddies big cock it rubbing it in the inside', his descriptive prose tipping me over the edge, as simultaneous orgasms tore through my frame, clitoral, anal, and G-spot, my lower torso collapsed, my legs giving way and as I slipped his huge cock popped out, and he started masturbating over my writhing body, still spasmodic from repeated orgasms, and as I twitched away those final few, he bathed me in his semen, as if in a final act of domination.