Blackmailed by Sister In Law - Sex Stories

Blackmailed by Sister In Law

My sister in law was staying at our house, she was working as a nurse, on night shift, and slept most of the day. One afternoon, when I was feeling horny, I thought I would have a few hours to myself, as she would sleep all afternoon, my wife was at work, and kids at school. I am secretly bi-curious, and love to browse the gay or tranny groups looking at those big juicy dicks, and imaging what it would be like to suck on them and have mine sucked by a man. I was soon hard and horny, so as I was expecting to be in private for at least another hour, I stripped off and started rubbing my swollen dick, while I browsed those long hard dick pics. I was moaning softly, as I was really turned on, and close to cumming, when all of a sudden I heard a female voice say "What the fuck are you doing there?" and was blinded by a camera flash as my sister in law Courtney stood there in her nightie, camera in hand, and puzzled look on her face! I reached across to turn off the monitor, and tried to cover my bulging dick, but she said "It's a bit late for that, I've been watching you for nearly 10 minutes, wanking off to dicks". My heart pounded, as I said "You're not going to tell Jessica are you? Please don't, she would kick me out in an instant". She replied "I don't need to tell her anything, I have a great picture of you naked and wanking off to a dick picture! What's this picture worth to you?" I groaned, realizing that she held all the cards right now, and I was in really hot water. I ...

... replied "OK, what do you want, name it, anything you desire, as long as you give me that picture". She said "Let's go upstairs and we can discuss your options in the bedroom", as her eyes were firmly fixed on my still hard erection. "You're not going to make me cheat on my wife are you?" I said, rather sheepishly. "You already did, I have a picture of you to prove it" she laughed. "But that's not cheating, I was only fooling around, it's only my imagination." "Too bad, my sister considers that cheating, so if it's good enough for her then it's good enough for me too". I didn't understand what she meant, or what she wanted me to do. We entered her room, and she said to lie down on the bed. She took out some stockings, and tied my hands to the corners of the wooden posts, and then my feet to the other corner posts. She laughed, "Silly men, always perving on the wrong things". "What are you going to do to me?" I was scared that she could still tell my wife about my activities. "I want you to lick my cunt, my ass, my tits, and then MAYBE I will let you go after that". She lifted her nightie over her head, revealing her perfect, firm, soft breasts, the nipples were standing up so hard, she must have been turned on by the power of her dominance over my tied body, maybe from my swollen knob, I just wished she would hurry up and get it over with. "Do you like my boobs, slave?" "Yes." She slapped me and said "You must reply YES MISTRESS". OMG I thought, this is a wild one! I had better ...