In high school, I got so tired of my friends telling me how sexy my sister was. It did not matter that it was true. It is not something I wanted to hear about Tasha who was, and is, a year older than me. She has maintained her high school figure since graduating 7 years ago as she is overall slender with C cup breasts and a very large butt in relation to the rest of her body. Ours was a very normal middle-class childhood with both parents and two other siblings.
In high school, we both had active social lives and many of the same friends. While we both made the honor roll Tasha did not go to college as she fell in love and got married while I went to college and am now a lawyer handling discrimination claims of all types.
I should make it clear that I knew my friends were right about Tasha being hot but it still was embarrassing to hear her talked about like that. If I am being totally honest I must admit I did have fantasies about making out with her but never even flirted with her. There would be no need in writing this unless something changed a few weeks back. Tasha and her husband, Ryan, live a few blocks from me and my wife. We come and go from each other's places freely.
Evidently Tasha had forgotten that I told her I would be by this particular afternoon to help her with some legal paperwork. I pulled up to the house and the door was standing open and I could hear two voices the male voice was not Ryan's as it was deeper than his. At first, I thought nothing of it. As I got closer I heard my sister cry out, "Fuck, deeper Oscar, harder...yes!"
Silently I crept in the door and took off my shoes. I looked around creeping in further and then I saw them. There was Oscar, a local politician and our neighbor, fucking my sister while she was dent over the kitchen table. I stood there daze watching his very large cock pummel Tasha's pussy. Being bisexual, it did not take long for me to become rigid. It was just too much to take between his hard member and balls and especially her bouncing tits and big ass. They did not notice me as I was only five or so feet away when Oscar panted, "Fuck Tasha, you've made Monday afternoons my favorite time of the week!"
That was it, I had heard enough; lust overtook me. A plan formed instantly in my mind. The plan was not original and was very simple. Tasha had become very spoiled by the life style her husband provided as they were one of the richest families in town. If he found out about this she would be left with absolutely nothing in the divorce and I knew she would do anything short of murder to keep that from happening. Blackmail was the obvious answer even though I knew I would never really tell Ryan about what was going on in his own home every Monday.
My feet shuffled silently the last few feet to the couple and I could see my sister's pussy honey glistening on Oscar's cock as he worked it in and out. I didn't breathe as I made my move. First, I grabbed our neighbor's ass and plunged a finger into his rectum. He looked over at me startled unable to speak. Almost instantly I grabbed one of my sister's tits and gave it a squeeze as I planted a kiss on Oscar's mouth. I plunged my finger deeper into his bowels to hold him in place as Tasha was pinned against the table.
"Ryan would be very interested to know what you two have been doing on Monday afternoons. Dare I say it Oscar the voters would love to hear about this as well. I can just see the headlines now!" Tasha screamed as she was made aware of my presence. She tried to pull away but was too well pinned and Oscar was too far gone to stop fucking her.
"If you two don't want real trouble you will do whatever I say whenever I say from this second on," I said coolly as I continued to finger fuck our adulteress neighbor. His stroking was getting faster and my sister was arching her back but still trying to pull away.
"That is...blackmail. You wouldn't do that...to your own sister," Tasha panted. I removed my hand from her tit and swiped it across Oscar's cock on the outstroke then licked off my sister's honey. Oscar did not say a word as he just grunted.
"That is exactly what it is and yes I am blackmailing both of you! Oscar this is the last time you will have sex with my sister and you will not cum inside of her. You will, however, cum in my mouth. Now pull out," I demanded. He just kept fucking her so I pulled my finger out of his ass hole and squeezed his balls until he finally relented and pulled out.
"Tasha stay right there while I make your boyfriend cum!" stopping her in her tracks as she had begun to scramble to get away. She already had pulled her silky panties back on but I stared her down and she quit getting dressed. She sunk to the floor beside us as I joined her there .
"You fucking bastard why are you doing this?" she demanded as I grabbed Oscar's cock in my hand. I licked all around the member tasting my own sister's honey until it was clean. Then I sucked the stiff cock into my mouth in less than a minute I was rewarded with his salty spunk.
It was tempting to do more to him but my sexy sister was there and I just had to have her. Just watching her breasts rise and fall with her breathing was turning me on more than I can ever remember. I pulled Oscar to the floor beside her and quickly snapped a few pictures with my cell phone of the two sweaty lovers Shoving the phone back in my pocket I curtly spoke, "Oscar get the fuck out and don't come back. I'll let you know what else you can do for me soon.".
Silently my sister and I watched as Oscar got dressed and walked out the front door. At that time, I had no intention of any further sexual trysts with him in the future as that could complicate my relationship as a lawyer with the politician but I could absolutely use my blackmail power to get favors from him. I looked over at Tasha and saw her fidgeting nervously.
