Author's Note: While this story and its various chapters are primarily incest themed, it will often contain things such as excessive cum, anal play/pegging, and whatever else amuses me at the time. Reader discretion is advised.
****
Christine was starting to get worried. Usually Jaime and Emily were so good about getting themselves up for school. This morning there'd been no sign of either of them so far. Even more disturbing, Emily's room was empty. She was getting a vague sense of something being terribly wrong.
At first Christine was relieved to find that, in fact, all three of her children were safe and sound in Jaime's room. Her relief tarnished as she processed the sight of them all snoozing together, cuddled up in a single bed. Worse still, she could see an awful lot of bare shoulder and chest where they weren't covered by their blanket.
"Good morning!" Christine said with the tone of one more concerned with being heard than actually conveying a sense of goodness.
Jaime and Emily jerked awake. Lilith kept snoring away. The two younger siblings lifted their heads and squinted sleepily at their mother.
"What?" Jaime said.
"You're going to be late," said Christine. "You need to get up right now."
Jaime groaned. Emily had already closed her eyes and set her head back down on Lilith's shoulder. They'd both been losing an awful lot of sleep lately. It had caught up with them in a big way this morning.
"We need a sick day," Jaime mumbled.
"You do not," Christine insisted.
She crossed the room and threw back the covers. She gasped in shock as her imagined fears were confirmed. All three of her children were deliciously naked. They were cuddling without any clothes on. They couldn't do that.
"What the hell is this?!" Christine demanded.
"Relax, Mom," Emily said. "My bed got all covered in cu-- sweat. Definitely sweat and not cum. I was sweatting because of how sick I am, and my bed got all gross. So I had to come sleep with Jaime."
"Lil came to keep an eye on us in case we got too sick," Jaime added. "And there wasn't much room with all three of us, so we had to take our clothes off to save space."
"You seriously expect me to believe that all three of you are naked in bed together, and nothing sexual is going on?" Christine asked, crossing her arms in anger.
"Well we tried telling you we were fucking and you wouldn't believe that either," Jaime muttered. "What do you want from us?"
"I want you to behave. You're all brother and sisters. You can't do things like that."
"Like what? Sleeping naked together, or fucking?"
"Both." Christine dragged Emily out of bed. "Get some clothes on. Your brother has an erection, and I don't want you encouraging that by being all sexy and naked in front of him."
"Ugh," Emily said. "Mom, Jai's hard all the time anyway. It's got nothing to do with me."
In fact, that was untrue. Jaime's constant arousal was almost entirely to do with either being around or thinking about his sister.
Emily tried to placate her mother. She grabbed one of Jaime's shirts out of his dresser and put it on. It just barely covered her naughty bits.
"There, happy now?" she asked.
"You need bottoms too," Christine said.
"Why? I'm covered." Emily looked over her shoulder. "Can you see any of your sister's sexy parts, Jai?"
"No. Try bending over."
Emily bent over. "Like that?"
"Yep, now I can see your pussy and butthole."
Emily straightened up. "So all I have to do is not bend over. Easy."
"Don't make me ask again," Christine said.
"Fiiine. I don't know why you're worried about Jai's erection all of a sudden though. He's been hard basically constantly since he turned eighteen. And I know you know because you're always staring and licking you lips."
Christine reddened. "I have never done that."
That was another falsehood. She had, in fact, been having real trouble keeping her son and his penis out of her mind lately. She felt like such a bad mother for always staring at him with lustful eyes. She felt even worse that she'd apparently been caught doing it.
"Jaime, you get dressed too," Christine said. She didn't know what else to do at this point but to keep giving orders and pretend like she was in control of her life. "You shouldn't be lying on your older sister like that. Especially not with your penis pressed up against her."
Jaime reluctantly crawled over a still sleeping Lilith and stood up. His erection was even more prominent in that position. He silently dug through his dresser with his cock bobbing along to every movement. His sister and mother both stared with incestuous, sexual fascination.
"Now, I don't want to see any more hints of sexual inpropriety," Christine said, her eyes still glued to her son's cock. "And certainly nothing that could be construed as super-hot sibling incest. Do you understand?"
"Yes, Mom," Emily and Jaime said together.
"Good. Now I'm going to call your school and tell them you'll be out sick. You two get some rest, and not in the same bed."
"But my bed's all gross," Emily said. "Where am I supposed to sleep?"
"There's a fresh six-pack of mattresses in the linen cupboard. You can take one of them." Christine headed toward the doorway. "Now, I need to get ready for work, so you two behave yourselves. And for heaven's sake, if Lilith's going to be sleeping in here, at least cover her back up."
Jaime shrugged and pulled the blanket back over Lilith. She was still snoring away and oblivious to everything around her. She'd had even less sleep last night than he and Emily, and it would take more than a loud family argument about incest to wake her up.
The siblings set about replacing the mattresses in Emily's and Lilith's rooms. Jaime had obediently put on a shirt and boxers. Emily still wore only a top with nothing below it. She took every opportunity to bend over and display herself wantonly to her brother. If their mother appeared at any point, she could simply stand up and be covered again.
Jaime's cock wouldn't stay in his boxers. He kept tucking it in, and sometimes it would stay for a while. Every time Emily bent over in front of him, it would spring back out through the hole in the front of his underwear. He just had to bear it until they finished refurbishing the beds and disposed of the old mattresses in their backyard mattress incinirator.
"Your dick keeps poking out at me, you know," Emily said as they watched the mattresses burn.
"Well your pussy keeps poking out at me," Jaime countered.
"If Mom wasn't home right now we could totally fuck our brains out anywhere in the house."
"If Mom wasn't home we'd already be fucking our brains out instead of standing around talking about it."
Emily looked around, but the yard was clear. She wrapped her arms around her brother's neck and kissed him. Her shirt pulled up with the manoeuvre so that he ass was exposed from the back. Jaime reached around and squeezed her butt.
"Someone could see us," Jaime said in between kisses.
"They could," Emily agreed. "We are outside with no real cover."
"It would probably be a neighbour. Someone who knows us."
"Someone who would know we're brother and sister, you mean?"
The danger of being caught was only turning the siblings on even more. They'd been awake for almost an hour without fucking each other even once, so they were about ready to explode even without the risky thrill.
"We could get in a lot of trouble," Jaime continued, his cock pressing insistently against Emily's tummy. "We're half-naked, outside, and making out. That isn't something people would be ok with a brother and sister doing."
"Mmm, and they certainly wouldn't be ok with how wet I am for my sexy little brother's cock," Emily said as she guided one of Jaime's hands to feel her flooded pussy.
"You know what they really wouldn't be ok with?" Jaime asked.
Emily's eyes shone. "I have no idea," she said innocently.
"If my cock went inside my sister right here, out in the open."
Jaime lifted Emily up by her hips and lowered her onto his cock. She wrapped her arms and legs around him, then clung tightly.
"You're right," she cooed. "They wouldn't like this at all. It's very improper for you to incestuously put your penis in your sister like this."
Emily's pussy was contracting rhythmically around Jaime's cock. He tried to fuck her, but since she was already being suspended off the ground by his hard shaft, that really wasn't going to work. He needed to get somewhere where he could properly fuck his sister.
Jaime carried Emily into the house. She bobbed on his cock with every step, and her pussy muscles kept tightening and releasing. She also kissed and licked his neck as she was transported like sexy cargo.
The bathroom was the best place Jaime could think of. Their mother would check their rooms if she wanted to find them, but she might not check in there. He carried Emily in and shut the door.
"Mmm, bathroom sex, huh?" Emily said. "You gonna fuck your sister in the bathroom?"