Rebecca stared up at her bedroom ceiling as she let the events of the other night play back in her head on repeat.
She and Abi had watched a hot film together…and Rebecca had gotten hard in the middle of it.
While she hadn't been caught, the idea that Abi could glance over and see her sporting a bulge left her feeling excited. After the incident with Abi walking in on her and catching her stroking her dick to her picture, Rebecca was wondering if luck was really on her side. She had too many close calls. Was this a sign to tell her to stop? If she kept this up, she was going to get caught. So, as she tossed and turned in her bed, trying to get to sleep, she made her decision. There was to be no more funny business involving her grandmother and her dick.
Rebecca grimaced. She couldn't believe that she just strung those words together in that sentence.
Thankfully, no one was around to hear that.
Suddenly, Rebecca's ears perked up as she heard something coming through the walls.
At first, she thought it was just her imagination playing tricks on her as she tried to drift to sleep. Then, she considered the possibility that it was a commotion coming from outside of the house. But, with where they were stationed, there were no neighbors that it could have been and no one would be walking by here at this late hour. So, Rebecca listened carefully to decipher what the noise was and where it was coming from. It didn't take long for her to know what the noise was. Her cheeks flushed as she heard soft, feminine moaning and whimpering. There was someone close by who was tending to their needs. She tried to find the epicenter of the noise. After following the sound, she was soon staring at the wall behind her bed.
No…
Rebecca froze. The sound was coming from Abi's bedroom.
For a short while, Rebecca lay on her bed and tried to comprehend what she was listening to. The unmistakable sound of moans came through the bedroom wall and tickled her senses. Rebecca didn't know what to do. She couldn't do anything other than listen to her. Abi's moans were quiet, no doubt in an attempt to stop herself from getting caught. She probably thought that Rebecca was asleep. Down below, Rebecca felt herself harden.
Shit.
This was the last thing she needed. But, as long as they were rooms apart, maybe she could get away with this.
Rebecca palms herself through her pants, rubbing firmly against the bulge as she felt herself getting harder with every passing second. She bit back a moan as Abi's moans spurred her on. Was this really happening? She felt the outline of her cock in her boxers. Would Abi enjoy the sight? She tried to imagine her grandmother's expression as she gazed upon her concealed package. Would she be delighted or disgusted? The latter should have been the answer.
Yet, Rebecca couldn't bring herself to think of anything other than imagining a look of utter elation plastered over Abi's face.
She had walked around the house in boxers before. But, her cock was not nearly hard enough to make her pants tent. Abi wouldn't have noticed anything. The closest would have been the movie night they had recently. If Abi wasn't so fixated on the movie and had gazed in Rebecca's direction, she would have seen the raging boner that was trying to break free out of her granddaughter's pants. Rebecca hissed at the thought of Abi noticing and perhaps reaching over to cup a feel.
Her touch would be lighter than Rebecca's. She wouldn't be as needy or desperate. Rebecca imagined caring patience with Abi's hand movement. She'd take her time and probably tease her.
The moans in the other room grew slightly louder. That made Rebecca's patience snap completely. She wasn't in the mood for teasing.
Rebecca's head fell back against the pillow as she shoved her hand into her pants to grasp her shaft. A hot moan slipped out of her. The tension was too great. She pulled her cock out into the open and slowly started to stroke it. All she could hear was the quiet moans and whimpers coming from behind the wall. She used those sounds as a guide. The tempo of her hand would constantly change. She didn't want to go too fast, but keeping the pace slow was far too tormenting. Her other hand reached under her top to squeeze her breasts, toying with the nipples as she pumped her dick harder and faster.
Abi's moans had become muffled. Was she trying to cover the noise? Rebecca smirked. It was too little, too late at this stage. She wondered who her grandmother was thinking about. Perhaps, an old flame? A person of interest that she harbours feelings for in the town? Rebecca tried to think. There wasn't a single person that came to mind who seemed to ignite Abi's interest. The person that she seemed to be most actively engaged with was…
Rebecca's whole body tensed at the thought.
Could Abi be thinking about her?
Rebecca tried to quash those thoughts. Though, that was difficult considering how good she felt at this very moment. There was no way that Rebecca's forbidden feelings were shared with Abi. It had to be a coincidence. Abi simply had needs of her own. Rebecca just happened to have noticed on this particular night.
Although…she could pretend that Abi was thinking about her.
Steadily increasing the speed of her hand movements, Rebecca then resorted to fondling her balls at the same time. She licked her lips and closed her eyes, allowing thoughts of Abi being the one between her legs to fester. In her mind's eye, it was Abi's fingers that were wrapped around her shaft and squeezing her balls.
God, this was wrong on so many levels. It was bad enough that she masturbated to a picture of her. At the time, Rebecca could have at least made the excuse that it was Amber who had set her off because she was also in the picture. Now, there was no mistaking that Rebecca was jerking off with Abi clearly being the person she had in mind. She was listening to her mewls of pleasure go on and on. Rebecca's heart raced as she longed for it to be her that was the source of Abi's pleasure. She wanted to be the one who made Abi cry out in ecstasy. If this was a dream, Rebecca would have marched into that room and offered herself to Abi. They would have fucked until dawn and then carried on throughout the day.
But, that didn't happen because this wasn't a dream.
As Rebecca continued to listen, a question crossed her mind…if she could hear Abi, could Abi also hear her?
Rebecca was doing her best to remain quiet. But, as she stroked her cock harder and faster, it became difficult to keep her moans under a certain audible level. By now, pre-cum had leaked down her length, causing the shaft to become slick. The wet sounds of her hand moving up and down her, dick filled the room. If Abi wanted to listen, she could probably hear her. The only reason why Rebecca believed that Abi hadn't heard her was that Abi was still going. If she knew what Rebecca was doing, she would have stopped immediately…right?
A low moan rolled out of Rebecca's throat. What if Abi was listening to her as well? The chance that they were mutually masturbating whilst being encouraged by the sounds of the other person was such a hot concept to the young woman. She wished for it to be true. She imagined it so. Tempting fate, she moaned louder. The rise in her voice was minimal, but it was enough to be noticeable.
Abi was still going.
She must have heard Rebecca. Perhaps, she was too far to care? Judging by the higher-pitched tone in her voice as time went on, she was on the verge of going over the edge. She was going to finish and then probably storm into the room to scold Rebecca afterwards.
Rebecca was fine with that as long as it meant listening to the climax.
Eventually, there was a specific type of whine that came from Abi's room. Rebecca knew what that meant. Her grandmother had cum and was trying to desperately cover her sounds of satisfaction. The image of Abi coming undone beneath her was the breaking point for Rebecca. She bit her bottom lip to suppress a grunt as she jerked her hips upward and shot her cum all over her stomach. She stroked herself for a short while, making a complete mess of herself; wishing that it was Abi's body that she had the pleasure of painting with her climax.
God, the thought of seeing her cum plastered all over her gorgeous grandmother's face was surreal and beyond words.
As much as Rebecca wanted to hold onto that image, she knew that the bliss wasn't going to last. She braced herself for the oncoming storm. Any second now, Abi would burst through that door and demand an explanation from her. So, Rebecca waited.
And waited…
And waited…
Rebecca's brow creased as the house fell completely silent. Turning her head to stare at the wall as if she could see through it, Rebecca yearned to know what was going on in the other room. Seconds turned into minutes. Still, nothing. Had Abi fallen asleep after having her private fun? Rebecca couldn't believe her luck. She was almost certain that Abi had heard her at some point. But, it appeared that wasn't the case. Rebecca was beginning to believe that she was the chosen one who was destined to save humanity from a machine-controlled simulation considering the number of bullets she had dodged.
As she calmed herself and rested on her pillow, Rebecca couldn't shake away the slight twinge of disappointment that clawed at her. There was part of her that wanted Abi to hear her. The thought of the two of them mutually masturbating with only a wall to separate them was so hot. The only thing that would improve it would be the remove the wall between them. But, Rebecca knew that would never happen. She was digging too deep for her own good.
She rolled to her side and felt her eyes grow heavy. She needed to put these taboo feelings to rest. If she didn't stop, she was going to get caught at some point. She dared not think about how Abi would react if she knew what Rebecca was really thinking.
At least she had her dreams, where she and Abi could get up to all kinds of naughty mischief.
XXX
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