Sharon's Older Sister Joan

Joan was more than a little freaked out. 

The twenty year old blonde’s day had started perfectly normal. She’d spent the majority of it running errands in preparation for the twins’ birthday party. Then not long after Robin showed up, her mom had slapped her ass. That alone might have been just an odd sign of affection but her mom’s hand had lingered for a few rather awkward moments. Her mom acted like it was totally normal as she’d continued straightening up the living room. Eventually, Joan just shook it off. 

Later she’d went looking for her mom to ask her how many folding chairs she thought needed to be brought up from the basement, but she hadn’t been able to find her or Sharon or Robin for that matter. Finally she’d heard noises and followed them to the source: the bathroom off the kitchen. She’d only gotten within a few feet of it before the sounds started sounding like….sex. Joan had been so shocked and horrified; she’d immediately turned on her heel and retreated to her room. Again, she’d convinced herself it wasn’t what she’d thought it was and had chastised herself for having such dirty thoughts.

After a fairly refreshing nap, Joan had been passing the bottom of the staircase as Sharon and Robin were heading up it. With a hand on the banister, she’d opened her mouth to ask her younger sister what she’d been doing earlier when Sharon had suddenly cried out and collapsed upon the stairs. More than a little concerned, she’d stepped up to help her sister when Sharon’s shout abruptly became a lewd moan. Right before Joan’s eyes, Sharon’s skirt clad butt began to undulate almost as if she were humping the stairs. She’d frozen in misstep as she watched her sister quiver and shake as if she were in the midst of an amazing orgasm. Robin had just watched from a few steps higher, a weird look in her eyes.

Finally, Sharon’s body relaxed and immediately she was up and rushing up the stairs. Once again Joan had been about to go after her when she caught sight of…something hanging between her sister’s legs just past her skirt’s hem. Joan stopped abruptly once again as she tried to process what she’d just seen. The way Robin lingered for a moment and roamed her eyes up and down Joan’s body like a frat boy, only added to her confusion.

Joan didn’t know what to make of it but more and more she got the feeling she was suddenly stuck in an episode of The Twilight Zone.