Lenny has just seen something that has blown his mind, he definitely wasn't meant to see it.
Note: This story contains traces of incest. Feel free to read other stories if you don't like it.
I couldn't believe what I was seeing or how it affected me. I was becoming wildly excited despite the fact that one of the women downstairs was my mum. I looked over at Janet and saw her staring intensely with a glint of lust in her eyes suggesting she also enjoyed what she was seeing.
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Bisi and my mum continued their kiss for many more long minutes as they began to gently caress each other. Our position at the top of the stairs provided the perfect vantage point for watching the couple below and kept them well hidden so there was little risk of being seen.
With Janet and I eagerly staring, Bisi and my mum’s embrace became even more heated. She was now leaning back against the arm of the couch while Bisi slowly ran her hands over her shoulders and up and down her arms. Bisi then slipped her hands down my mum’s sides and caressed her stomach briefly before letting her hands slip upwards and cup her breasts.
I heard a heavy moan of excitement and looked over to see Janet watching the pair below excitedly. As Bisi continued massaging my mum’s boobs it was clear to me that Janet was becoming more and more excited. At first Janet's nipples were visible under her top, but soon they stood out in very prominent points.
I didn't know who to watch so I looked back and forth from the couple below to Janet next to him. I found Janet's growing excitement very arousing and was especially turned on by the fact that Janet appeared to have no problem getting aroused watching her mum have sex.
Bisi had just finished pulling my mum’s top up over her head when I glanced back toward Janet. She had started to let her fingers lightly rub her tits through her top and currently her fingers were making lazy circles around the hard points of her nipples.
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A lusty groan from downstairs drew my attention and I was greeted with the vision of Bisi greedily sucking on my mum's boobs. My mum was leaning back even farther with her eyes closed tightly as Bisi alternated sucking her boobs. I couldn't believe how sexy my mum looked. I had seen her hundreds of times wearing only her pyjamas or her gown with nothing underneath, but I never would have guessed her breasts would be so sexy naked. They weren't too large but they had a very attractive shape. Her nipples soon became hard as Bisi lustily swirled her tongue and lips across her lover's tits.
Watching my mum and Bisi together downstairs, it was clear to me that they were experienced with each other. They each moved in a comfortable, confident sort of way that let me know that they both were relaxed and confident together. The very idea of Bisi and my mum as lovers sent a tingle down my spine.
I pulled my attention away from the couple below just long enough to see that Janet had her hand slipped up inside her top and was continuing to massage her own boobs. Janet was so focused on watching her mum and mine downstairs that she seemed to take no notice of me watching her.
Another loud groan pulled my focus back downstairs. Now it was Bisi who leaned back and my mum had already stripped off her top and bra. The groan Bisi had made was caused by Mum's hands teasing and massaging her boobs. "My mum is a lesbian!" I excitedly thought to myself as she continued teasing Bisi's boobs until Bisi was groaning repeatedly.
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My mum continued playing with Bisi's boobs with her fingers and mouth for many more long minutes until they both stood up together. At first I panicked because I was sure they were coming upstairs and would catch me and Janet watching. Instead they began to hurriedly strip each other's clothes off until they stood completely naked gazing lustily at each other. They embraced with a wild kiss and I watched their boobs press together.
My mum guided Bisi back to the sofa and Bisi sat with her legs spread wide. My mum dropped to her knees on the floor and immediately lowered her mouth to Bisi's waiting pussy. Bisi groaned lustfully as my mum began licking and sucking at her pussy. My mum continued for several long moments before she pulled her head away slightly and moved her hand up to Bisi's pussy. My mum knit two of her fingers together and slowly worked them inside Bisi's pussy. Bisi again let out a long groan as my mum started fucking her with her fingers.
"Imagine this is Lenny’s hard dick fucking you," My mum whispered. Bisi immediately let out a lusty groan that seemed to only encourage her. "I'm sure he would love to fuck your wet pussy. He wants to fuck you until you cum and then keep fucking you until you beg him to fill you with my hot cum."
My jaw dropped open as I listened and watched. My mum and her lesbian lover were talking dirty about me while they fucked! My already rock hard dick tingled with excitement and began to practically throb inside my boxers.
My mum had continued talking about me fucking Bisi as Bisi was now clearly on the verge of her orgasm. When I focused again on hearing what was being said I heard my mum say, "Maybe Lenny has a big dick and it would stretch your pussy wide as he fucked you." I watched in horny amazement as my mum pulled her fingers out of Bisi's pussy and then slowly reinserted three and then four fingers into Bisi.
The extra size in her pussy was driving Bisi wild as my mum worked her fingers back and forth and talked about how my dick would feel inside Bisi. "Oh yes!" Bisi cried out as she started to shake from the power of her orgasm. My mum continued her finger fuck all through Bisi's orgasm and only let her soaking wet fingers slip out once Bisi had clearly finished cumming. As we all watched excitedly, my mum brought her fingers up to her mouth and made a show of sensationally licking Bisi's juices off of them. When she finished Bisi practically pounced on her and pushed her back onto the floor.
I couldn't see them as well in the position as they were blocked by one of the other chairs so Janet and I both shifted positions to be able to see our mums downstairs.
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