All active characters in this story are 18 years or older. Highlighted kinks include voyeurism, exhibitionism, and masturbation.
You may want to read the first story in this series, 'Not Normal 01 - Thelma's Thoughts' and come back for this quickie. This is spun off a bit from there. But I'll go ahead and set it up for you, regardless.
Thelma, a 40 year old wife and milf, is sitting in her living room alone in the evening. She's nude, having taken off her robe earlier, save for the robe's belt, currently wrapped around her neck as a makeshift choker. She's lost in her thoughts, reminiscing, fantasizing, and occasionally masturbating. She's largely unaware of her surroundings.
Her 20 year old son, Steve, a competitive swimmer and lifeguard, is upstairs in his room, none the wiser yet about what his mom is up to. That is, until he hears her laugh to herself, a bit too loudly, and he decides to investigate. And that's where this begins...
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As Steve was listening to a podcast about his upcoming college swim team and their record breaking streak from last season, he heard an odd noise from downstairs. At first, he paid it no mind, assuming it came from the TV. Then, he heard it again.
Laughter. It was definitely laughter.
He paused the podcast and listened more closely. It sounded like it came from his mother after all, and not the TV. It must be something really good for her to react like that!
Like himself, his mother was reserved, and it wasn't often that she would react so loudly. Knowing this, he wanted to know what was so funny. Maybe he'd get a kick out of it too!
So he got up off his bed, ready for a good laugh, and headed to the stairs. He took his phone, in case she was looking at something online, so he could reference it.
Just as he was about to make his presence known to her, and ask her to share in the laughter, he caught a glimpse of her on the couch, from behind her. He wasn't expecting to see what he just did!
There she was, nude from at least the waist up, from his viewpoint. And her laughter was no longer there, instead replaced with lustful moans and very obvious, wet noises. Her hair was a mess, and she was covered in a sheen of sweat, or perhaps, other fluids? And some pink cloth was around her neck?
His mother was masturbating!
He felt terrible for intruding on her personal time like that. After all, he wouldn't want to be caught in her place. But, to be fair...
She was masturbating in the living room, and not her bedroom. The curtains over the big bay windows were wide open too, so... maybe she didn't mind being seen? Maybe she even wanted it!
Regardless, Steve did the reasonable thing and quietly returned to his room, saving her from embarrassment and him from an even more awkward situation. But, not before he captured a quick picture on his phone!
As he laid back down on his bed, he examined the picture. It had unintentionally used the flash feature, but that proved to be an interesting bonus with what it was able to show.