"Bye, Katie!"
Katie looked up from surfing the web to wave to her parents out of her bedroom window as they backed out of the driveway. Katie's dad had just gotten a huge promotion at work, and to celebrate he was taking Katie's mom on a weekend road trip to Las Vegas, some fifty miles away. They said they wanted to 'experience the thrill of Sin City', which Katie took to mean they would spend the whole weekend in their hotel room.
Katie gloomily turned back to the computer. It was looking as though she was going to spend the weekend surfing the Internet.
Katie was the youngest of five siblings, and the only one still in high school. At 18, she was extremely shy, which was probably why she had never had a boyfriend and kept a well-used vibrator under her bed. She was reasonably good-looking, with jet black hair that she kept tucked behind one ear, bright green eyes, and fair skin. Standing up to get a look at herself in the mirror, she looked her body up and down. Katie never played sports (she was uncoordinated at the best of times), but she had a naturally slim figure with 28C breasts. She was short, only five feet tall, something she never liked.
The closest sibling to Katie's age was her 19 year old brother Jake. Jake was only a few inches taller than Katie, but there was virtually no resemblance between them. Jake was the ladies man, and he often brought home hot girls. He had short blonde hair and blue eyes that girls loved. He was a long distance runner, and his lean body reflected that.
Katie's other three siblings were 22 year old triplets. Blonde with blue eyes, Julie, Alex and Mike looked almost identical, and they were closer than most siblings. Julie was a little bit curvy with large breasts while Alex had a body that women dreamed about. Mike was thin and gangly, but still attractive. Alex and Julie were so close, Katie sometimes wonder if they ever had sex.
Sighing, Katie reached under her bed to retrieve her vibrator. She had always been secretly attracted to all her siblings, and thinking about Julie and Mike had made her horny. She could already feel a moisture in her panties as she stripped off her clothes. Sitting in her computer chair with her legs spread wide, Katie clicked on a folder titled "English paper". Up popped a video of Sasha Gray getting fucked by an 8" cock while licking another girl's pussy. Slipping the vibrator along her dripping wet slit, Katie felt a surge of pleasure as the vibrator reached her clitoris. While not a lesbian, there was something about the sight of a girl eating out another girl that made Katie want to cum. As she let out a low moan, she heard the door open behind her.
Spinning the chair around in surprise, she was surprised to see her brother Jake standing in the doorway. His eyes started out at her face, then slowly moved down. Katie suddenly remembered she was completely naked, with her legs spread and her juices running down her thighs. She snapped her legs closed, and Jake turned bright red. Katie noticed a bulge beginning to grow in his pants.
"I-" Jake started to talk, then turned around and nearly sprinted out. Katie, who was also red, walked over and closed the door, then laid down on her bed and stared up at the ceiling. She was more embarrassed than she had ever been in her life, but also turned on. She fell asleep thinking about that bulge in Jake's pants.
When Katie woke up soon after, it was dark in her bedroom, and she could hear someone moving around. She laid there on her bed, too scared to move. When the light suddenly turned on, she saw her four siblings standing over her. She realized she was still naked, with her vibrator glistening with her pussy juice on the bed right next to her. When Katie tried to cover her once again soaking pussy and hard nipples up, Julie sat down on the bed and gently held her arms down.
"What are you doing?" Katie asked her older sister.
"Jake told us what happened earlier," she said, " and we thought we would give you the time of your life."
As Julie was talking, her and her brothers started to take off their clothes. Katie noticed what amazing bodies her siblings had. Julie had perfect round breasts with small nipples that at the moment were hard as rocks. She was shaved except for a small strip of fur, which stopped just short of her tight pink hole. When she turned around, Katie saw that her ass was big like her breasts, and as well shaped. When Julie saw her looking, she jiggled it and spread her cheeks while bending over, giving Katie a view of her tight pink asshole and pussy.
When Katie looked over at her brothers, she was amazed to see that they all had penises at least as big as the one that Sasha Gray was fucking in the video.
"Spread your legs." Julie said, taking control. Katie complied, still unable to believe that this was happening, and Julie put her tongue to Katie's crotch and started to lick her wet slit as she rubbed her throbbing clitoris and fondled one hard tit. At first, Katie resisted, but her sister was apparently experienced at this, and Katie was soon relaxing. Each time she passed her fingers over her clit, Katie felt a surge of electricity throughout her whole body. Between Julie's probing tongue and the fingers abusing her clit, Katie soon felt herself starting to cum. "I'm going to cum!" yelled Katie, and Julie started to lick harder. Katie felt her orgasm wash over her, and she squirted her juices all over Julie's face. She licked Katie's moistness from her pussy as the last shudders of the most intense orgasm Katie had ever experienced washed over her, then got up and turned to Jake and Mike, who were watching her hungrily.
"Your turn," was all she said. Mike came over and swung one leg over Katie so that his massive cock was hanging just above her face. He spread the head of his cock on her lips, coating them with precum. She opened her mouth greedily and Mike put his penis into her mouth. She could feel it stretch her jaws as it reached the back of her throat, still only halfway in. She forced her throat to relax, and Mike managed to get it in another inch or two. He started to facefuck her as she made a gurgling noise in her throat from the giant wet obstruction. At the same time, Jake started rubbing his cock along her dripping wet slit to lube it up. Katie started to feel her pussy swell even more as she realized that she was going to be penetrated by a penis for the first time ever. Finally, when Jake's cock was soaked in Katie's juices, he started to ease his 9" into her tight virgin pussy. She felt her vagina contract hard around the intruding member as a wave of pain and ecstasy wash over her, but Jake slowly forced his cock into her until she could feel his balls pressing against her. She tried to scream from the pain, but Mike's cock in her mouth turned it into another gurgle. Out of the corner of her eye, Katie saw Julie swing her leg over Alex's cock and start to fuck him in the cowgirl position. Julie's back was to Katie, and Katie saw that Julie was fucking Alex hard enough to spread her large cheeks on every thrust and display her tight virgin asshole. She could here a wet slurping noise as Julie slid up and down her brother's cock.
As Katie was admiring her sister's ability, Jake started to pick up the speed of his fucking and soon Katie could feel herself cumming again. As Jake slowed down, Mike took his cock out of Katie's mouth and made room for Jake. Jake slid his cock into Katie's mouth, and let her lick her juices off. At the same time, Julie finished off kissing Alex to grab her ass and start screaming as a flood of juice rushed out of her pussy onto his cock. She regretfully got off his penis and licked her juices from his cock. Katie was wondering what would happen next. This was already the best day of her life, and judging from the grins on her brothers' faces, it was about to get better.