Blackmailing My Little Sister and her Friend into Sex part 2

Continuation of part 1. After popping Mandy’s cherry it was time to move on to my sister.

“Oh this isn’t over yet,” I told her.
“What do you mean?” my sister asked.
“We don’t want to waste my spunk,” I said. “Lick it off your friend’s chest.” If looks could kill, I would have been a dead man. “It won’t be the first time you ate cum,” I guessed. “Go on; eating cum will make your tits grow bigger.”
“No way I’m eating my brother’s cum,” she said.
I pressed play on the video. Lynne’s voice was quite clear:
“You like that, don’t you, bitch? You like me to touch you there, don’t you? Who needs a man, anyway, right?” The image showed Lynne’s eager face as she vigorously thrust two fingers in and out of a girl’s shaved pussy.

Looking furious, Lynne began licking up my cum from her friend’s chest. Mandy, hearing that cum makes your tits bigger, scooped a bit from her tummy and tasted it.
Mandy’s breast buds were just beginning to show, just two puffy nipples sticking out from her otherwise flat chest. Mandy was clearly enjoying the attention her best friend was giving her sensitive nipples and Lynne had her licked clean in short order. Mandy looked a bit disappointed when she quit so abruptly. Lynne wiped the excess spunk from her lips with the back of her hand and glared at me.
I was getting turned on at the sight of girl on girl action. It was time to push it to the limit. “Now,” I instructed my sister, “eat her out.”
My sister looked at her naked friend. Mandy looked apprehensive at the thought of another girl being that intimate with her, and Lynne gave her a quick, reassuring smile. Lynne turned back to me and shrugged.

“Won’t be the first pussy I’ve eaten,” Lynne said in a matter-of-fact manner. “Probably won’t be the last, either.”

I have to admit I was shocked. I knew my little sister had boyfriends and tended to go for older guys. I suspected she had done sex stuff, but didn’t know how far she had gone. But to hear she had been with girls as well as guys blew my mind.
Seeing the surprised look on my face made Lynne laugh; she dived into Mandy’s box with gusto. I leaned in to observe her technique, then looked up at Mandy’s face to see her reaction. She was obviously enjoying herself, but Mandy continued to look straight at me to see how I was responding.

Truth is, I was getting super horny from watching my sexy sister go down on her friend. My cock, flaccid after shooting my load, was waking up and becoming even harder than before.
When Lynne came up for air, I grabbed her head on either side and shoved my cock into her mouth. I then began face fucking her until she gagged. I let go and she came after me, flailing at me with her fists. I grabbed her fists in either hand and fought her off.

We struggled for a bit, with my sister twisting and turning, using both arms and legs, trying perhaps to kick me. She twisted all the way round and I pushed her on the bed on her stomach and lay on top of her. She continued to struggle, cussing me, bucking her hips in an attempt to throw me off. When her hips came off the bed, my now rock hard cock slipped easily into her slot and I nailed her. As I suspected, she was no virgin, and I was able to plant my cock all the way in one thrust. I began a savage stroke and my sister soon tired of her struggles and submitted.

I looked over at Mandy and saw she was mesmerized at the sight of my cock going in and out of Lynne’s pussy. As I continued to rape my sister, Mandy began to play with herself. Mandy and I looked into each other’s eyes as she stroked faster and I pounded my sister’s slick hole harder and deeper, until Mandy convulsed in her very first orgasm ever.
My sister had gone limp beneath me, but her body responded instinctively to my assault; her juices were flowing, her pussy clamped down tightly on my cock. The combination of Mandy’s display and the feeling of my sister’s pussy milking my cock brought me to the most glorious climax I have ever had before or since. I slammed into her cervix and pushed into her womb, dumping the largest load of baby-making seed I had ever produced. My cum continued to boil up from my balls and I dumped a second load, a third load, and a few smaller loads filling Lynne’s pussy.

When my orgasm subsided, Lynne pushed me off and sat up on the bed. “You bastard!” she said venomously. “You came inside of me! I’m ovulating, you moron. You just got your little sister pregnant! What are mom and dad going to say when they find out you put a baby in me?” She then turned to her friend. “And you! What was that? Rubbing one out as I was being raped by my brother?”
Mandy did not know what to say. “I’m sorry, it looked so hot, I don’t know what I was doing,” she pleaded.
“Next time I get to jack off while my brother pounds your ass!” said Lynne.
Mandy brightened. “That would be great! I would love you to watch…” Mandy paused. “Oh, right. You were being sarcastic,” she said and looked down, her face flushed red with embarrassment.
Lynne look at Mandy, then looked at me, then looked at the cum leaking out of her pussy.

Then Lynne turned back to Mandy. “No worries, sweetie,” she reassured her friend with a hug. “Not exactly the way we planned it, but we were both able to lose our virginity at the same time.”
I started to correct her, but she cut me off. “And you!” she said, punching me in the arm. “Baby daddy: you owe me big time. Next time I ask you to take us to hang out with our friends, you will drive us there and pick us up with no questions asked.”
“OK,” I replied, feeling a bit sheepish. “Got it.”
“Now unlock your phone and hand it here!” she demanded. I did as she asked, and she scrolled down to my pictures. “Deleting the video and photos from today,” she began. “What is all this?” she asked. “Are these dick pictures? Eww, I’m deleting those as well. And is this our neighbor sunbathing topless? Deleting that, too…”
I grabbed my phone back. “Hey, what are you doing?” I said miffed.
She grinned. “Serves you right. Now get lost so me and my friend can get cleaned up.”

As I was leaving, I looked over at Mandy. She gave me a shy smile and looked away.

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