As soon as they were alone, Ashley blurted, "Have fun little sister?"

"What are you talking about?" Karen asked, not wanting to admit anything to her sisters.

"I saw you and Dan..." Lori smirked.

"What were you two up to?" Ashley added.

Karen blushed. "Nothing! So what if I was with him!" She answered trying to sound confident.

"Come here," Lori ordered.

"No. I wanna change first," Karen said as she headed toward the bedroom.

Lori and Ashley sprung from the couch. Karen tried to bolt by them but Ashley caught her arm. Karen managed to free herself from Ashley but Lori grabbed her and the two fell to the floor. Karen ended up face down on the floor and unfortunately her dress rose up to her waist in the fall exposing her naked ass.

The two older siblings began to laugh as Karen yanked her dress down. "So you were up to nothing, huh? Seems like you're missing something. You got laid this afternoon, didn't you. How long you been doin' that?" Ashley chuckled.

"No I didn't!" Karen gasped.

"Look, we know you left the house this morning with your panties on. You were with Dan and now you haven't any panties. You musta done something. It's OK, you know. Ashley and me aren't exactly virgins either." Lori stated in a now calm voice.

"Did you like your first time? How many times have you done it?" Ashley added.

"We didn't do that. We only fooled around..." Karen blushed but she was now more relaxed.

"What did you do?" Ashley asked.

"You know... stuff," Karen answered.

"Did he finger you?" Ashley began. Karen nodded. "Did you cum?" Again Karen nodded. "Did he kiss you down there? Did you kiss his cock? Did he cum? Did you swallow it?" Ashley quizzed. After each question Karen nodded silently. "Did you like it?" Ashley finally asked.

A grin formed on Karen's face. "Yeah," she replied. For the next few minutes, the girls talked about boys, sex, and their experiences. Karen was now completely comfortable with her sisters. For the first time she felt like their equal instead of the "little" sister.

As the conversation became more revealing, Lori stated to Karen, "We gotta get you laid."

Karen suddenly stopped. "Huh?"

"You've done everything else. Time for the 'good' part," Lori gushed. Karen was going to protest but was interrupted by the door bell. "Here's a $20 bill. That'll be the pizza guy. Pay him while me and Ashley go call the guys," Lori instructed as she and Ashley ran for the phone.

Karen paid for the pizzas and set them on the coffee table as Lori returned. "Finally! I'm starved!" Lori exclaimed as she grabbed a piece.

"Is Ashley coming?" Karen asked.

Before Lori could empty her mouth, Ashley rushed by, now without her jeans on, and went into the bathroom. The sound of water meant she was washing her hands. She came out and grabbed a piece for herself.

"A little pregame warm up?" Lori grinned.

"It's been a while. A girl has needs," Ashley chuckled. "The guys will be here in an hour." The subject of the boys was dropped but the conversation did center around sex as the girls ate. Karen, although relatively a novice, proudly told of her "exploits" feeling happy she could participate in such a discussion. As the last piece of pizza was consumed, the girls continued to talk.

Once again the doorbell rang. "That's the guys," Ashley announced. "Seeing you're the only one completely dressed, you answer the door, Lori." she chuckled.

Karen had almost forgotten about being pantyless and Ashley being dressed only in a top and panties. "Aren't you going to put something on?" she asked Ashley.

"Why bother," Ashley grinned. "Why don't we take turns getting laid. Since it's your big night, you wanna go first Karen?"

"Ah... um... No, that's OK," Karen stuttered being suddenly embarrassed.

"OK, I'll go first," Lori offered. "I'll pick a guy and you can watch. Then you pick a guy, then Ashley can have who's left. OK, Karen?"

The reality of the situation hit Karen. Without much thought, she agreed with Lori. The sound of the doorbell made Karen jump as the boys rang it again. Lori jumped up and let the boys in. They all had big grins on their faces. "You guys got everything?" Ashley asked.

"Yup!" Jerry answered as he dropped a package of condoms on the table. Chuck too reached into his pocket and added another package.

"Let's get naked!" Lori suggested as she started unsnapping her jeans. All began to shuck their clothes except Karen, who just sat there wide eyed. "Come on Karen," Lori urged.

"She's probably shy because she doesn't have any panties on. Chuck, I think your brother might have something to do with that," Ashley giggled.

Karen and Dan both turned bright red. Dan had already stripped to his underwear and the tent he was displaying began to shrink. "Karen, you don't want us to strip you, do you?" Lori cautioned. Karen shook her head but didn't make any move to take off her clothes. "Guys, can you help?" Lori requested.

"No!" Karen blurted as she grabbed the hem of her dress. She boosted her ass off the floor and pulled the dress free. As she did, the others, except for Dan, completed removing their clothes.

As Karen reached behind her to unhook her bra, Chuck whispered to his brother, "Strip!" Dan, like he had just been awakened from a trance, quickly pulled off his underwear. The six were now sitting in a loose circle on the floor. All the boys, including now Dan, were sporting rock hard cocks. Without saying a word, Lori took one of the packages from the table, opened it, tore off a condom for herself, then gave each sister one. She then crawled on her hands and knees to Dan and gently pushed him onto his back.

Dan stared at Lori as she crawled on top of him. Smiling at the prone boy, she tore open the package and slid the condom over his erection. Once on, she leaned down and kissed him. Dan's arms went around her back as her tits masked into his chest. Her nipples felt like bullets as they jabbed him. His cock sandwiched between their two bodies. Lori broke off the kiss and looked into Dan's wide eyes. "Ready, stud," she whispered as she lifted and slid her hand down to his cock, aiming it.

Karen's jaw dropped. She had been sitting almost opposite Dan. When her sister had pushed him back and climbed on top of him, Karen hadn't been able to see much. As Lori bent down, her charms had been in plain view and now with her lifted slightly, Karen could see Dan's sheath covered rod pointing at her sisters wet cunt. Karen knew what fucking was but watching it for the first time was almost unreal.

Lori, in slow motion, lowered herself down on the stiff rod. Karen heard him groan as his prick disappeared inside her sister. Finally all that could be seen was his balls between his slightly parted legs and the base of his shaft at the entrance to Lori's stretched pussy. Lori started to move her ass up and down. Karen had a clear shot of the cock sliding in and out of the glistening slit while Lori's asshole seemed to wink with each stroke. Karen felt her own juices begin to flow. Dan's hips began to move picking up Lori's rhythm.

The only sound in the room was bellies slapping together save an occasional moan from the fucking couple. Dan was quickening the pace and his groans getting louder. "Oooo... Ahhhh..."  came from deep within him as his hips shot up plunging his swollen member deep into Lori. She pushed down onto him but his upward thrust was so strong his ass remained suspended. The sounds of fast, ragged breathing filled the room.

As fast as his hips had shot into the air, Dan collapsed under Lori. She continued to mash her crotch into his. It was obvious the boy was spent. Lori continued to mash but he remained motionless. Finally she rolled off him, pulling his cock out as she did. His once proud soldier now dangled limply between his legs, seemingly weighted down by the cum filled condom.

Lori was the first to stir, She sat up and looked at Karen. "Your turn."

"No!" Karen exclaimed with panic. "Let Ashley go next."

No one objected. Ashley tossed her condom to Chuck and laid down on her back, spreading her legs apart. Karen, who had been next to Ashley, had to scoot over to avoid Ashley's knee. As Chuck crawled over, Karen looked at her sister. Ashley's pussy was already opened slightly and it's lips glistened with the moisture they had been coated with. Karen watched as Chuck sat on his legs and rolled the condom over a much larger cock than Dan's. He then leaned down over Ashley supporting himself with an arm.

His free hand wrapped around his prick and aimed it at her waiting hole. Ashley grunted as Chuck pushed down burying himself into her. Instead of slowly fucking like Lori had done. Chuck's pace was rapid. Each time he slammed his erection down deep into Ashley's pussy, she let out a grunt as the force jolted her body. Her legs wrapped around his as she held on to her fuck machine. "Oooo... Yesssss... Mmmmm..." groaned Ashley as her small tits shook with each thrust. Karen was almost surprised her sister was enjoying such a battering but their was no doubt she was.

Ashley's face contorted as she screamed out "Ahhhhh" as orgasm found her. Her mouth was wide open sucking in each breath like it was her last. Suddenly Chuck grunted as he pushed forward with such force Ashley actually slid forward on the floor. Karen watch in amazement as his eyes clamped shut and his face wrinkled. His body tightened as his hips backed off slightly only to slam down again hard.

Ashley had moved her legs from being around his to being wrapped around his ass. Her ankles were locked together as she rode him for all she was worth. He was still thrusting violently but only her shoulders were on the floor. She was holding his so tightly her ass was now suspended in mid air. Eventually he stopped thrusting and his body dropped onto her pushing the air audibly from her lungs. There were beads of sweat on his forehead.

Ashley recuperated for a moment. After her breathing became slower, she looked over at Karen. "That's what I call a fuck!" Karen looked down at her sister's smiling face. "You ready for your thrill of a life time?"