The next few days...

The next few days passed somewhat uneventfully, there was more food missing than normal, but everyone assumed it was Blarp, despite Penny swearing she was feeding her regularly. Maureen had come out of her room the next day to eat. She looked visibly fatigued, but assured everyone she was fine. Don filled her in on what had happened with Will, choosing to leave out what had transpired afterwards between him and both of her daughters. To which she smiled and thanked him, hugging him tightly. From that angle, Don couldn't help but look down at her backside, his cock twitching in the sweats he had opted to wear after how painful the erection Penny had given him had been in his combat pants. The combination of seeing the way her sexy ass popped out from her, and the feeling of her breasts pushing into his chest, caused Don's penis to throb against her belly, which he hoped she hadn't noticed. It turned out his fears were justified as they broke the hug and Maureen’s face had adopted a slight red blush that went all the way down her neck and into her suit.

“Maureen, I'm so sorry, I didn't mean to.”

She dismissed him with a wave of her hand, “It's ok Don, I'm not offended, under other circumstances, I would be very flattered. Thank you for making a woman feel appreciated.”

“Umm, anytime I guess.” he said without thinking, she grinned as she walked off.

As for the rest, Will poured himself into building the robot, saying something about possible temporal paradox if he didn't. Which kept him in the workshop all day. Everyone checked up on him regularly, but he seemed to be doing just fine, much to everyone’s relief.

Judy spent more time around Don, just talking mostly, but every once in awhile she would kiss him again, at first when no one was around, but that soon escalated to when no one was looking however, Don could see that Judy was starting to blossom.

Penny had asked Don to give her combat training, at first he turned her down, on the grounds, that it was unnecessary. But he finally relented under her persistent asking and the sound argument that if they landed on anymore planets, he would need some backup. So he taught her how to properly handle and use a firearm, how to fly the ship, and sparring. The sparring proved to be quite the hurdle for Don, because not only did it mean that he would be in close proximity with Penny, but she also wore very little when they sparred, opting for a purple sports bra and matching boyshorts. During these matches, Penny would take every opportunity to rub and touch every part of her body with his, relishing how uncomfortable she made him. It was during one of these instances that Judy walked in, wanting to show Don something. Seeing the position they were in, fearing the worse, Judy immediately left. Don ran after her, hoping to explain the situation before things got out of hand. He caught her just as she entered her cabin, the doors sliding closed behind him.

“Just get out!!”

“Judy it's not what you think!! Penny asked me to train her.”

“Bullshit!”

Don was taken aback by that, in the time they had known each other, she had never used foul language of any kind.

“It's true Judy, he's been a perfect gentleman.”

They turned towards the source of the voice and there Penny stood, her mirthful face slightly knit in concern.

“But you two were…”

“I was teasing him, and can you blame me? I mean look at him, not only is he the only man for light years in any direction, but he’s so good-looking to boot! If you weren't going to surprise him today I was going to knock him out, tie him down, and have my way with him!”

Don was shocked to say the least.

“Wait, what surprise?”

This time, it was Judy's turn to be flustered,

“Penny! I was… I mean… but you…”

“Jesus Judy, spit it out or I'll tell him!!”

That seemed to give the older sister the courage she needed as she squared her shoulders, and as calmly as she could said,

“I want you to be my first.”

“Huh, wha?” Don was dumbstruck. It was at that moment that he noticed that Judy was wearing a lab coat buttoned up, and from the way it moved about her body and the look of her bare legs very little underneath.

“That's right, she was going to give you her virginity! If I hadn't been there, she would have probably done right there in the gym!”

“No!” Judy exclaimed, easily falling for Penny’s bait, “I wanted to lead him back here where we would do it in my bed and and…” she started to stutter as explaining herideal fantasy caused her to overheat.

“See, look at her, she's getting so turned on she can't speak.”

“Both of you just leave!!”

“No can do sis, you need this, and Don needs this. I mean, just look at him! I've been teasing him mercilessly for the past few days and all he's done is take cold showers, I should know, I've been watching. All this time and he wouldn't touch me, and do you know why? Because he didn't want to hurt either of us. If that's not a saint, I don't know what is!! “

“Really?” Judy asked, all you could do was nod dumbly.

“Yeah, not even once. I bet even mom wants to get some of this dick!”

With that, Penny yanked down Don's sweats, causing his dick to slap into his belly from the motion, before settling for jutting out proudly in front of him. Judy's eyes were the size of dinner plates as she just gazed at his manhood.

“It's so big…” she murmured, her voice trailing off.

“And thick too!” Penny added from her kneeling position, wrapping her hand around his shaft, “I can't close my fingers around it. It's too big for my hand, why don't you help out sis…” Penny offered, her voice taking on a husky, lustful tone as she began to stroke him.

Slowly Judy stepped forward, as if in a trance, her eyes drinking in every detail of the only male sexual organ around for light years. She could feel the intense heat emanating from her pussy, it had been building since she woke up that day, intent on ending her chastity. And now it wanted, no, DEMANDED that she deal with it in the way nature intended. As she finally got within reach, Don startled her by reaching out and pulling her into him where his mouth met hers in an powerful kiss, the intensity of it searing into their memories. Don’s tongue quickly began to taste Judy's lips, causing her to moan into his mouth and giving him the access he seemed as his tongue entered her mouth to fence with hers. Don noted the differences between kissing Judy and Penny. While Penny had been wild and aggressive, Judy was gentle and submissive, letting him take the lead. When they finally stopped for lack of oxygen, Judy was left panting, her hair slightly disheveled and falling in front of her face as her gaze was drawn downwards by how Penny was still stroking him, both sisters gazing at his cock with need. Slowly, Judy sank to her knees, until her eyes were level with Don's huge cock being stroked by her petite sister's hand. Judy brought a trembling hand up, placed it where Penny’s had been, Penny placing her’s on top and guiding her motions as they stroked it together. Don groaned at the sensation of receiving a double handjob from the buxom sisters.

“Well sis? How’s it feel?”

“It’s so hot… and hard…”

“Can you feel his pulse?”

“Yeah…” then she looked up at Don, “Does it hurt?”

“No, it feels good, you’re doing great.” said Don.

“See? He loves it. You should kiss it.”

Judy’s eyes widened at the thought but she couldn’t help herself as she looked back to Don’s aching tool, her mouth watering a little as she subconsciously licked her lips. Don too, stared with rapt attention as he anxiously watched as Judy’s head slowly leaned in and she pursed her lips and placed them on the tip of his dick, she briefly held that pose. Before she could pull back, Penny chimed in, “Now take it in.” as she said this, Penny put her free hand on the back of Judy’s head, pushing her forward, and causing her to engulf the head of Don’s cock into her mouth. Judy let out a muffled, grunt as her mouth was filled with Don’s meat.

“Oh fuck…” Don moaned, having said nothing and continuing to do nothing as he experienced Judy’s first blowjob. Penny just held her head there, not letting her off, but not forcing more down her mouth.

“Taste him, whirl your tongue over it, savor this moment.” She whispered huskily into her ear, instructing her older and less experienced sister. “Keep your lips tight around the head, and gently suck.” she added before finishing with, “Look into his eyes.” Judy did everything she was told and as she locked eyes with Don, she could feel her pulse quicken as her pussy throbbed with need, one of her hands crept down and covered her mound, pressing inward in an attempt to soothe the aching heat that was coming from her core. The first and only cock in her mouth as she swirled her tongue around his mushroom head as she tasted him. Her body yearning for more as she whimpered around it, causing Don to moan involuntarily at the sensation made his cockhead tingle. Staring back down into Judy’s eyes, Don got lost in the sensation and bucked his hips slightly, driving another four inches in and making it bump against the back of Judy’s throat, which caused her gag reflex to kick in, quickly pulling him out, Judy started to cough.

“Judy, I’m sorry, I didn’t mean to…” Don started to apologize, but Judy held her hand up and stopped him.

“It’s ok, I just wasn’t ready for it.” she tried to assure him, but he could see the tears that had welled up in the corners of her eyes and was just about to pull his pants up when Penny interrupted.

“Now, I want a taste. Here, let me show you how to take it in sis.” Penny spoke as she led Don by the dick and turned him to face her. She took a moment to study his spit-shined cock before she opened her mouth took him as deep as she could, bumping his head into her tonsils. She gagged from the sensation but remained in control as she slowly pulled her head back, sucking on every inch as she did so. When the head finally cleared her mouth, she took a deep breath before looking up at Don and telling him, “it’s bigger than I’m used to, but don’t worry, I got this. Sis, I hope you’re paying attention.” with that, she lowered her mouth back onto Don’s throbbing meat pole, getting another groan from Don. This time though, as his head pressed against the back of her throat, she kept going, swallowing as she did so. She reached the five inch mark, then the sixth, she kept going like this, moaning heatedly the entire time. Her left hand pinching her nipples through her overstuffed sports bra, while the other was shoved down the front of her boyshorts feverishly rubbing her clit with her thumb as she worked her middle and ring fingers in and out of her snatch. Once she could feel her lips touch the base of his cock, she looked intonto Don's eyes as she smiled in triumph around the thick cock in her mouth, its head lodged somewhere in her esophagus, it was receiving a constant massage from Penny’s throat muscles as she kept swallowing, as though she were trying to take him even deeper.

“Holy shit…” was he could say as he rested his hands on top of her head, he could do little else as his brain was experiencing a sensory overload. It took all his willpower just to keep from buckling at the knees as Penny upped the ante by pulling her head at a torturously slow pace, letting a couple inches of his cock leave her throat before pushing her head back down. With each pull back, she let another inch or so leave the snug confines of her slutty throat, before swallowing him back down to the base.

Judy for her part, was a silent witness to the erotic scene playing out before her. Penny turning Don meant that she had an unobstructed view from the side, which allowed her to watch every detail of her younger sister’s fellatio, from how her lips dragged over skin is of his member, to how her throat bulged around its head. She thought that watching her sister get it on with Don would repulse or anger her, but instead all she could do was moan with wanton need as her hand pressed more insistently on her mound, her body begging her for release. With her free hand she pulled one of her massive tits out and began to knead and fondle the expanse of tit flesh, this got a rather vocal and lust-filled moan from her.

Don, who's head had been pulled back as he savored the sensations that Penny was causing him, looked down as he heard the new moan coming from Judy's direction. Watching Judy play with herself while her younger sister continued to blow him, combined with the fact that Don hadn't gotten any for the past few weeks had him at the edge.

“Penny, I'm gonna!!” he groaned as he started to pull her head off of him, not wanting to **** her to swallow something she wasn't ready for. Penny however, had other plans as his cockhead cleared her mouth, a few lines of her drool mixed with his precum connecting her outstretched tongue with his throbbing member, and then suddenly drove her head forward, slipping free of Don's grasp as she deep-throated all ten inches in an instant, pushing Don over the edge in the process.

Don’s brain exploded as he came, pouring his jizz down her throat in volley after volley as he growled through his release. As this was happening, Penny suddenly went rigid and squealed as best she could around the cock in her mouth, the way her body was twitching leaving very little doubt that she had reached orgasm. About halfway through, Penny pulled back until the head was nestled against the inside of her lips so that she could taste the remainder of his salty gift. Once his spurting member slowed to a stop, she used her hands to extract what was trapped inside his shaft, a lewd sucking noise filling the room and causing Don to shudder as she did it. Once free, she got up and crossed the short distance to her sister, who could do nothing as she watched mesmerized by what had just taken place. She was so entranced, that she did nothing as Penny kneeled in front of her, and pressed her body into Judy's.

“What are yo-MMMPHH!!” was all she got out before Penny grabbed her by the back of her head and forcefully kissed her, catching the older Robinson sibling completely by surprise. Don could clearly see that Penny was feeding the load she had held in her mouth into Judy's, who went a little slack as her brain was overwhelmed by the scenario playing out before her. Don could only groan in response to watching the sisters make out before him, paying extra special attention to how Judy's throat began to work at swallowing her sister’s generous gift. Once Penny had transferred all the contents of her mouth to Judy's, she ended the kiss, to the elder sister's disappointment somewhat.

“So did you learn anything?” she teased her sister, who could only moan in response. She looked at Don, a naughty smile on her lips, “Oh my god, you're ready to go again that soon?!” Penny's statement caused a slightly dazed Judy to direct her half-lidded eyes towards Don, his cock throbbing at the scene before him.