Rated M of course ;D I don't own anything in here. Review? Please?

I thought this was a bit weak, but funny. What do you think?

LITTLE SISTERS

"Your sister is sick, so make sure that if she needs anything, you give it to her, alright?" Mrs. Knight said, scooping up her keys from the counter. She sighed as Kendall slipped his arm around Jo's waist and smiled.

"We're just gonna watch movies on the couch, and I told Katie to keep her door open so we could hear her," Kendall spoke with a soft smile. Jo nodded and Mrs. Knight smiled at the two of them, coming over to Kendall, and kissing his forehead with tender peck.

"Thank you for doing this sweetheart," she said with a smile. Kendall smiled back and chuckled.

"No problem, mom," he said. Mrs. Knight bid good-bye to Jo, and sighed deeply.

"I'll be back in two hours or so, call me if you need anything, okay?" she asked her son and his girlfriend. Kendall nodded as Mrs. Knight made her way out the door to run some errands, leaving Kendall and Jo alone in the living room.

"Why don't you go get the movie started, and I'll check on Katie before we sit down," Kendall said. Jo smiled and leaned in as he pecked her lips, his hand going to her cheek, and rubbing in underneath his thumb. Jo pulled away slightly, thinking the kiss was over, but Kendall chuckled, leaning in again, opening his mouth on hers in a passionate lip lock, them both chuckling into it. They finally parted and Kendall made his way to the back where Katie's room was.

He opened the door to her pink and purple room, and saw his poor, sick sister, a pile of tissues next to her bed, along with a large glass of juice, curled up in bed miserably. She was shaking a bit from being so cold, her brown hair pulled up into a messy ponytail, her eyes locked on the TV across the room from her. Kendall frowned and took a few steps into her room, Katie looking up at him confused, but a small smile peeked from her face.

"Hey, Kates," Kendall spoke softly, sitting down on the bed, watching his poor baby sister cough. She sighed deeply, as Kendall took his hand and smoothed back her hair a bit, her head burning up. "Feeling any better?" he asked. Katie nodded no, her eyes a bit teary as she let out another whooping cough, Kendall not being able to feel anything less than horrible for her.

"I'm sorry, Baby Sister," Kendall spoke softly, gently pushing her hair back, Katie's eyes closing.

"I feel horrible, Kendall," Katie strained to get out, due to a sore throat. Kendall nodded sadly, and sighed.

"I know, why don't you try getting some sleep," he said her with a small smile. Katie nodded and sighed, trying to snuggle up more into the comforter as Kendall leaned down, and brought his lips to her forehead, gently kissing the burning flesh. He looked at her as she sighed deeply and closed her eyes.

"If you need anything, me and Jo are right outside, okay?" he whispered. Katie nodded weakly, bundling up more in the covers as Kendall took her remote and turned the volume on the TV down a bit, as well as turning the lights in the room a bit dimmer. He slowly but surely walked out of Katie's room a bit upset at the pain she was feeling. Walking into the living room, he saw that Jo had already set up the movie, and was on the couch with two glasses of lemonade, and a bowl of popcorn.

Kendall sat down and sighed a bit upset, immediately slinging his arm around Jo's neck, holding her close. Jo looked up at her boyfriend, knowing his mind was elsewhere.

"How's Katie?" she asked sadly. Kendall sighed loudly again.

"Not good. Her fever is really high, the poor kid is so sick," Kendall said upset, swallowing hard. Jo frowned and hugged Kendall closer to her kissing his neck chastely and touching his chin gently.

"I know you're upset, but she'll get better, babe. She just needs some rest, and fluids. She'll be back to her witty self in no time," Jo said with a smile. Kendall smiled down at her and gently pecked her lips, brushing the hair from her face.

"You're right," he said with a smile. "I just hate seeing her like this."

"I know, but don't worry about it. She's gonna be fine, especially since she has you as a Big Brother," Jo chuckled out with a smile. Kendall smiled, and leaned down kissing Jo's forehead, as the two redirected their attention the TV.

xxxx

Kendall didn't know how it happened. Only a half an hour later, the DVD was paused outside, with two half empty glasses of lemonade on the table, a bowl of half eaten popcorn, and Kendall and Jo's cell phones on the table.

However, Jo and Kendall weren't on the couch.

The two were on Kendall's bed, his jeans undone, Jo's hand's under his boxers as they messily kissed. What had started out as an innocent peck on the lips during the movie, had turned into a full out make-out session, which had led to Jo and Kendall on his bed, rounding second base.

Their lips messily kissed, his tongue succulently scoping out her mouth as they fell back on the bed. Kendall was up against his head board, Jo straddling him, with her hands dipped into his jeans. He held her head with two hands, under her messy blonde hair as her hands dipped deeper and deeper into his boxers.

"Baby," Kendall moaned sensually into her mouth, as Jo swallowed all of his words and moans with her lips. Jo's hands tugged his erection from his boxers, and as the cool air hit it, Kendall sucked in pleasurably. Their lips still messily collided, Jo giggling and smiling as her hands surrounded her boyfriends throbbing length, tracing it gently.

"Jesus Christ, Jo," Kendall mumbled out, as his girlfriends slick hands began to stroke the underside of his length, agonizingly slow and teasingly.

Kendall felt all the blood rush to where Jo's hands were as he sighed loudly, and she went to his neck, kissing it soothingly. She tugged on the skin of his neck a bit between her teeth and he laid his head back, as she began to forcefully pump her hand. With each flick of her wrist, Kendall was captivated even more, his legs shaking a bit, spreading wider under her.

"Baby, it feels so good, baby girl," Kendall whispered out in moans, Jo licking his jaw line and gently sucking on his Adam's apple. The two teens wear passionately in the moment, Jo's hands like magic against Kendall's body. He loved this more than anything, how he still couldn't fathom how Jo could make him feel.

Kendall sighed out loudly, lost in a mix of passion and pleasure, as Jo moved her hand even faster, squeezing his erection that lay between them. This was the absolute best Kendall had ever felt. Seeing as the two hadn't had sex yet, Jo was getting pretty good at giving hand jobs, and Kendall felt purely in heaven as she began to move her hand slower and slower, moving to his tender head, and kneading it between her fingers.

"Baby girl, I'm g-gonna c-come," Kendall whispered out in a soft moan, closing his eyes tightly as Jo continually moved her hand to finish him off.

And then, it happened.

"K-Kendall?"

Kendall's eyes shot wide open, as he looked at the door and saw a sick Katie there with wide, confused innocent eyes, staring at the scene before her.

"FUCK! Get out, Katie!" Kendall screamed at her in panic, quickly grabbing a pillow to cover up his throbbing, swollen erection, and pushing Jo off him. Katie's entire face changed, as she ran out of the door terrified, and Kendall collapsed back on the bed in panic.

"Fuck!" he whispered out of breath, as Jo looked at him, catching her own breath.

"Shit, Kendall. I thought you said she was asleep!" Jo whispered upset and annoyed with him.

"I thought she was!" Kendall told her with a furrowed brow, his voice cracking a bit on the last few words. He sighed and looked up at his ceiling, still breathing heavily, as he rested his hand on forehead, closing his eyes in embarrassment.

"Now, I'm gonna have to talk to her. Cause if she tells my mom, I'm fuckin' done," he exclaimed angrily, closing his eyes in frustration. He looked down, taking the pillow from his jeans and saw that he was still hard as ever, and that the miniscule friction from the pillow had gotten him so close, there was no way that he could go in there and talk to Katie right now.

"Babe, please," Kendall asked miserably, motioning down to his length. Jo sighed nervously, and looked at the door, which was now definitely closed. She looked back at Kendall and rolled her eyes a bit, bringing her hands back down to its previous work.

Katie Knight sat on her bed with tears in her eyes, her cough coming out in horrible, loud intervals, her runny nose and throat scratchy and itchy as could be. As if she hadn't felt horrible enough, Kendall had cursed at her.

Katie was very confused unto what was going on. She had been calling Kendall for a few minutes, and since he wasn't answering, she'd figured she get up and go to the living room herself. Maybe she could watch a movie with him and Jo, and she'd feel a bit better. However, going into the living room of the apartment, Katie heard a few moans from her brother's room. She began to get a bit nervous, seeing as Kendall and Jo weren't on the couch. Maybe Kendall was hurt, or Jo was hurt. Katie's heart beating faster, she went to her brother's door, and pressed her ear up against it, hearing loud, heavy breathing.

Getting a bit nervous, Katie pushed the slightly ajar door open, and she saw something very confusing. Kendall's head was back, his hands gripping Jo's neck a bit, as her hands were at the fly of his jeans which were half off, her hands moving around something long, and both were heavily breathing. Katie couldn't see her hands that much, due to her body blocking the view a bit.

"Baby girl, I'm g-gonna c-come," Kendall whispered out in a soft moan, closing his eyes. Katie had no idea what was going on, and remained unnoticed until she spoke his name.

What exactly were Kendall and Jo doing? Katie didn't know, she didn't understand anything, she felt absolutely horrible from her sickness, and Kendall had screamed at her bloody murder. Suddenly, she heard a knock on her door.

"Katie? Can I come in?" Kendall asked. Katie cried harder and wrapped herself up in her blankets, coughing severely.

"No…get…away," she barely got out through a fit of coughs. Kendall didn't listen, as he opened the door, sweat covering his face, seeing his poor, sick Baby Sister crying in her bed hysterically, her face red from coughing, tears spilling everywhere.

"Kates, I'm sorry," Kendall spoke softly, running over to her, and sitting her upright, her face redder than before. She cried and coughed, as Kendall sat next to her, rubbing her back gently, trying to get her to relax.

"Here, have a sip of this," Kendall said, offering her the now warm juice on her nightstand. Katie took a big sip, and swallowed hard, Kendall putting the cup back, as he rubbed soothing circles on her back, and her tears finally ceased.

"Why did you scream at me?" she asked him, a few spare tears running down her face. Kendall sighed and hung his head, pulling Katie close to him.

"Because I didn't expect you to come in there, and I'm sorry. I shouldn't have used that word with you, and I promise to never do it again, alright? I didn't mean to hurt your feelings," Kendall spoke softly. Katie looked up at Kendall with wide eyes, and licked her lips. She wanted so bad to know just exactly what Kendall and Jo were doing, and she had a vague idea about it.

"Okay," she said. Kendall swallowed hard and looked into her with a small, innocent nervous smile. He knew Katie was going to ask, and he was going to have to tell her some sort of bogus, half truth to cover it up.

"Kendall?" she asked softly. He closed his eyes and took a shaky breath in, looking down at, trying his best to stay calm.

"Yeah?" he asked. Katie swallowed hard, and let out a small cough, looking up at him.

"W-what were you and Jo doing?" Katie asked shyly. She knew it was something she wasn't supposed to see, and she knew it was something that was way past her years, but she did want to know. Katie was usually so on top of things when it came to Kendall, beating him at math sometimes, and business knowledge of course, but this, she had no clue about.

Kendall sighed deeply, and bit his lip, trying to get this out the best they could.

"Sometimes…when people love each other, like me and Jo love each other, they do things to make each other feel good," Kendall spoke with a nervous, shaky voice. He took a deep breath out, and Katie looked at him confused, snuggling into him more.

"But, what was Jo doing to make you feel good?" Katie asked cluelessly, with wide eyes. Kendall cursed himself under his breath, looking up at the ceiling, trying his best to pull some bogus answer out of his ass.

"Uh, well, s-she w-was, she was…" Kendall fumbled nervously.

"I was massaging his stomach, Katie. That's all," Jo said confidently, stepping into the little girls' room. Katie looked at Jo confused, Kendall looking back at Jo in relief, as she smiled at the little girl, and came to sit down next to her, stroking her brown hair soothingly.

"Well, where were you going with Jo after that?" Katie asked curiously, switching her eyes from Jo to Kendall. Kendall furrowed his eyebrows and let out a small chuckled, quite confused.

"W-what do you mean?" he asked her. Katie looked at Kendall confused, as if he was stupid.

"Well you said you were going to come. Where were you guys going?" she asked innocently, Kendall's face turning beat red, Jo letting out a nervous sigh and chuckle. Kendall's entire face was hot, and he rubbed his sweaty palms on his jeans and chuckled.

"Uh—we were, we were going to go outside and keep finishing the movie, right?" Kendall asked his girlfriend. Jo looked down at Katie and nodded, and she looked from the both of them and coughed slightly.

"Oh," she said quite upset, looking down. Kendall rested his hand on her thigh and tipped her chin up.

"What's the matter?" he asked her. Katie looked up at Kendall and then at Jo sighing.

"I—I wanted to watch the movie with you guys," Katie said. Kendall smiled at her nervously, starting to calm down a bit, as Jo chuckled and leaned down, kissing her brown hair.

"Of course you can co—watch the movie with us," Jo said, catching herself using the word. Kendall chuckled and nodded, looking down at Katie with a stern eye.

"But only…if you promise not to tell mom that you were up and sick, because you're not supposed to be out of this bed unless I say so," Kendall said, arching an eyebrow at his sister. Katie wiped the last tear from her eye and nodded, as Kendall threw a blanket around her shoulders, and bundled her up. He exchanged relieved, miraculous glances with Jo, as he hoisted Katie up into his arms with a playful grunt, and she sighed.

"Kendall, I can walk myself, I'm not stupid," Katie chuckled out, as he put her down on the floor. Katie looked back at Kendall and Jo and smiled, before running out to living room, leaving the two lovers in the room.

Jo brought her hands to Kendall's waist, and slipped them around, kissing his back and chuckling.

"Massaging your stomach, huh?" he asked with a giggle. Jo sighed and turned Kendall around in her arms with a sly grin.

"You couldn't think of anything better," Jo giggled out flirtatiously. She leaned up and pecked Kendall's lips lightly, smiling at him.

"Well maybe I'll massage your stomach sometime," he said with a sly grin, leaning down to capture her lips in a passionate lip lock. Jo giggled in the kiss, and pushed him away.

"Can't get me started with this again, Knight, you know what happened last time," Jo giggled. Kendall nodded and cuddled Jo into him as they walked out into Katie's room, and saw the girl on the couch, her eyes alit on the bloody, gorey violence on screen, her face twisted in horror, as she fumbled with the remote to try to shut it off. Jo looked at Kendall with wide eyes, forgetting the rating of the movie they rented and he sighed.

"I'm gonna be such a bad dad."