This is a rewrite of "Mother Sits on My Lap in the Car" by chris99999.
Major changes: I really liked the plot of the original story, but the execution was a mess. I made lots of grammatical corrections to improve clarity as well as major rewrites to make the story steamier and more realistic. Basically half or more of the original was gutted and replaced.
Minor changes: Body shapes, personalities, and family details changed to match my own family.
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"He's published a new one. Have you read it?" Millie asked me.
"Not yet," I answered. I was going to, but I'd been busy. It was on my list of things to do.
"I wouldn't bother, it's not as good as his other ones. In fact, it's really unrealistic. It was so unbelievable I couldn't get into it."
That was a surprise, because he was our favorite author on Literotica.com. I realized that she must be joking, but when I saw her face I knew that she wasn't. I was now curious.
"What's wrong with it?"
"It's not realistic. You can't have sex in the back of a car without the driver noticing. You'd hear them, and there might also be a smell of sex in the confined space. It's insane to think that you could get away with that!"
Still skeptical, I answered, "I'm going to read it, and we'll see if I agree with you."
My younger sister Millie and I have been sleeping with each other for years. That's a long story, but it all started with us trying to find things to weird each other out, except we ended up getting really turned on by this incest erotica author instead.
This author still knows how to push our buttons, but apparently Millie hated his newest story. It was called, "Mother Sits on My Lap in the Car." It took me about 30 minutes to read it, and as soon as I'd finished, she was asking for my opinion of it. I was going to give it to her, but she wouldn't like what I was going to say.
"It was good. A clever story that was well-written, with some steamy sex. What more did you want from the story?"
After giving a deep sigh, she said, "Some realism! They're bonking like crazy, but the driver is oblivious to what's happening. There's absolutely no way anyone could do that without getting caught! That's why I only gave it three stars."
"Three? That's way too harsh. Yeah, it required a little suspension of disbelief, but it was realistic enough to look past it. The radio was on, windows were rolled down, and that TV was blocking the dad's view. Maybe most moms would move around or whatever to change out the situation, but you never know what you'll do when things start bumping and rubbing and you get horny enough to stop thinking straight."
"But that's my point though!" She said, still upset. "There's no way any mom would let it go that far in the first place. But even if it were husband and wife, the driver would notice something was up whenever he tried talking to them or when they unloaded the car."
"I don't know, it seemed crazy, but still believable enough for me. Plus, it was really hot. I'm giving it a perfect 5 stars."
He had written a few before that just didn't do it for us, but none that had made her this upset before. She was so angry with it that she kept arguing with me for the next two weeks, trying to make me admit she was right. But I got annoyed with it, so I dug in deeper, actually changing my argument to say I thought it was very realistic, if only to make Millie mad. Meanwhile she dropped her rating of the story to a 1, probably just to make me mad. After a couple weeks, the author posted a new story about a brother and sister camping together. Millie loved it and we dropped the topic of car sex... for a while at least.
--
A few months laster, our parents were moving. They timed it so we would be home from college to help. Dad rented a moving truck, and we spent a week loading it up. The plan was for Dad and one of our uncles to take the truck to the new place 3.5 hours away, Mom and one of our aunts would drive our parents' car, and Millie and I would drive separately. Then after everything is unloaded, Millie and I would drive our aunt and uncle back to their house on our way back to college.
However, Dad went cheap and rented a truck that was way too small. Two sizes up would have held everything, but because of his mistake, both cars were now also filled to bursting. Mom is an expert packer, but no matter how she rearranged everything, we were still one seat short to fit everyone.
Eventually Dad got fed up and hopped in the truck's driver seat. My uncle shrugged, hopped in the passenger seat, and the truck took off. My aunt's anxiety got the better of her, and she hopped in my parents' car to quickly follow after them. That left Mom, Millie, and me to squeeze into 2 open seats in my car.
Mom called my aunt, asking her to come back and drop off her house keys so one of us could stay at her house for the week, but she didn't want to turn around. I also chimed in that we would figure it out, but that was more because I was excited to break in a new home (and new bedroom) with my hot sister.
Mom hung up the phone, pissed. "Ugh!! How the hell are we supposed to do this if I'm the only one trying to figure anything out!"
"Don't worry, Mom, we'll figure something out," I said reassuringly. "Worst case, maybe someone will have to sit on my lap." I gave Millie a playful wink.
Her face was a picture, astounded. Then she had a thoughtful, mischievous look in her eyes.
Mom said, "You know, we just might have to do that!"
Millie eagerly agreed. "Why don't we move everything so the back seat on the passenger side is the one that's free? Then maybe we'd be able to push the passenger seat forward and give the people sharing a seat in the back more room."
Mom, still angry, got to work. I whispered to Millie, "Holy shit, are you about to fuck me with Mom in the car?"
