Love of Lab Rats - Cover

Love of Lab Rats

Copyright© 2025 by LittleBrain

Chapter 4

Erotica Sex Story: Chapter 4 - A simple drive across the haunting beauty of the North York Moors turns into a journey neither of them will ever forget. Are they being watched? Chosen? Or have they become something else's experiment? Welcome to Love of Lab Rats—a chilling descent into the unknown, where family ties may be the strongest bond... or the cruelest trap.

Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa   Mind Control   Romantic   Fiction   High Fantasy   Mystery   Paranormal   Incest   Mother   Son   Anal Sex   Cream Pie   Massage   Masturbation   Oral Sex   Pregnancy   Squirting   BBW   Big Breasts   Size  

Alex was feeling more and more unsettled as the time for the party drew nearer. On one hand he had no desire to upset his mother but he was damned if he was going to remain celibate just because of her. If some girl, Emma or any other, wanted to throw herself at him he was not going to turn them away as he was not currently in a relationship. On the other hand he knew he was feeling jealous of his father and the way that Rowan was going OTT with the touchy-feely stuff so, on that level, he could understand if she was feeling something similar about the way he was behaving.

The problem was that neither had any claim on the other and it was not like they would ever have sex together again.

He made his way down to the ballroom a few minutes after the start time to find that most people had arrived already and the bar area was packed. He looked around for his family as he waited but could not see them anywhere and sent Saskia a text.

>where r u?

> sorting out the mess that dickhead created

>wtf?

>dnt ask. C u in a few. Dbl vodka and RB pls x 2

>kl

He finally got to the bar and made his way out of the throng and found a spare table away from the music speakers. He was putting the drinks on the table when he heard Saskia’s voice behind him.

“For Christ’s sake tell her she looks fantastic. How that fucking man has got to this age without having someone take a carving knife to him I’ll never know.”

Alex looked at his sister who looked stunning in a silver and black bandage dress with a plunging neckline and whistled appreciatively.

“You look fab-u-lous, Sis. Anyway, it’s unlike you to take against him. What’s he done now?”

Saskia looked over his shoulder and went sotto voce.

“I’ll let you work it out for yourself. Here they come now ... please be kind.”

Alex turned and immediately felt blood rush to his cock as he looked at his mother and a host of adjectives rushed through his brain. Her long blonde hair was done in a messy bun with a few trailing tendrils framing her face making her seem very young until you looked at the way her firm breasts were visible through the split in the dress and it was obvious she was all woman.

He thought she was achingly beautiful ... stunningly sexy ... but he couldn’t say that without sounding a bit pervy.

Rowan was looking at him with a look of shy hopefulness as he stepped towards her and smiled at her.

“You look stunning Mum ... you and Sask could be sisters.”

He was going to gently stroke a stray tendril of hair from her cheek but decided that would look too intimate so simply gave Rowan a perfunctory peck on the cheek. He kept his body away from her so that she would feel the semi that the sight of her had given him.

Rowan was disappointed and tried to move closer to hug him but he backed away and she guessed the reason when she glanced down at his groin. The corners of her mouth turned up in a small, triumphant smile.

‘God he’s hard ... I did that to him ... well fuck you Mike!

Alex avoided eye contact with her as they broke apart but he caught her downwards glance and more blood rushed to his face so that he was in danger of having none left for the rest of his body.

“Thank you, sweetie. At least someone noticed I had made an effort.”

The scorn in her voice was obvious and Alex looked over at his father who was standing somewhat embarrassedly behind his wife and would not meet his eyes.

‘You are a fucking idiot ... if I had a woman like this ... dressed like this ... sod the party ... I would have locked the door and not come out until the morning.’

Rowan turned to look around the room and Alex glanced over at Saskia who he hoped was pleased with his attempt to ‘ be kind ‘. Instead he found her glaring at him and he shrugged questioningly and mouthed ‘ WTF?’ at her. She glanced down at his crotch and gave a small nod and then back to his face. The meaning was clear ‘ I said be kind, not throw a boner.’

Alex blushed even more and turned away on the pretence of picking up his drink and adjusted himself he did so. He was saved further embarrassment by the arrival of Mike’s sister, Amy and her son Jake and her new husband Roger with his daughter, Emma. Emma made a bee line for Alex and threw her arms around his neck in a proprietorial manner and gave him a passionate kiss. Emma could feel the remnants of Alex’s deflating erection and thinking it was because of her, ground herself against it in a not very subtle way until Roger jokingly suggested that they get a room.

Alex looked immediately at his mother and tried to tell her with his eyes that it was not his fault but she looked angry and shrugged dismissively at him before turning away to talk to Amy. He turned to look at Saskia for some support who also dismissed him with a shrug... ‘ not my problem, Bro ... you got yourself into this... ‘

Rowan was seething at Emma’s behaviour and equally pissed off with Alex for not breaking the kiss earlier and allowing the body contact that he had denied her. The fact that she had no claim on her son’s body was ignored as the flames of jealousy were fanned.

The DJ started the music for the evening with the traditional first dance for the bride and groom and Alex took the opportunity to escape to the bar. He spent the first hour chatting with other relatives until the dancing stopped and the buffet was served but knew he couldn’t hide in the background forever. His sister found him as he was exiting the bathroom and immediately gave him hell.

“Where the fuck have you been? You were meant to have a few dances with Mum. She’s looking gorgeous and Dad’s being a complete shit. The least you could have done was hang about and bolstered her ego.”

“What and have her hassling me because of the way that Emma’s behaving? She seems to have got a stick up her arse about me and other girls and it’s none of her business if I fancy a quick hook up with Emma ... it’s not like we’re...”

He broke off as guilt overwhelmed him.

He had been about to say ‘ it’s not like we’re related ... it’s not incest or anything... ‘ but found himself thinking about the wonderful incestuous sex with his mother. Saskia saw the look on his face and wanted to know what he was going to say. He fobbed her off with an excuse and then changed the subject by suggesting they go and get some food.

They took their plates back to the table and it was obvious that Rowan was annoyed by his absence as witnessed by her sarcastic comments about ‘welcome back’ and ‘we were going to send a search party’. She glowered at him as they ate and she again decided to get handsy with Mike but this time it was definitely to make Alex jealous as she was even more annoyed with her husband than with her son.

Emma was also pissed off and pouted at him but sidled up to him after they had finished eating.

“Are you avoiding me as I thought we were going to hook up?”

He blushed and felt like telling her the truth that she was not his type ... petite, blonde, small boobs ... mother ... but looked around and caught Rowan pointedly staring at him, daring him to make a move. This annoyed him just as much as her overt display with his father and he decided to piss her off even more and bent to whisper into Emma’s ear.

“My mum keeps giving us the evils so I’ll meet you out by the summer pavilion in about 5 minutes. Look affronted at something I’ve said and storm off and hopefully it will put her off the scent.”

Emma gave a bravura performance and put an outraged expression on her face and raised her voice.

“Don’t be so disgusting Alex ... you’ve had too much to drink. I’ll see you around ... NOT!”

Alex watched her go and then looked around at the rest of the family group and saw a range of responses from non-committal shrugs from Roger and Amy, a ‘ you are such a cretin ‘ smirk from Saskia and a ‘ serves you right ‘ glare from his mother. He waited a few minutes until the music started again and edged away from the group and out into the hotel gardens.

Emma was waiting in the small summerhouse and launched herself at him as he entered and started kissing him voraciously before Alex gently disengaged.

“Look, Emma. I think you’re a beautiful girl and other circumstances I’d be really into you but just at the moment I’m not sure it’s a good idea ... if my mother ... fuckkkk ... what are you doing?”

Emma was taking no notice of what he was saying and was running her hands over his cock. She looked up at him with a naughty smile.

“Tell your mother to fuck right off, Alex, you’re a big boy now. Anyway I felt this big boy (giggle) earlier and want to see what he feels like between my tits ... I love titty fucks don’t you...?”

Alex was speechless as Emma pulled the top of her skin tight, strapless tube dress down releasing her huge bra-less breasts which flopped under their own weight against her body.

Alex was transfixed by the sight ... but not in a good way ... it did nothing for him and he could not understand why. His thoughts were panicked.

‘ When did I stop liking big boobs? What’s happened to me, I love big tits? Don’t I?”

Emma got down on her knees and undid his trousers before pulling down the zip to extract his limp penis from inside his boxers. She looked up at him in surprise and disappointment.

“Bashful, huh ... got performance anxiety? Don’t worry ... I can fix that.”

She proceeded to slurp his cock into her mouth and Alex’s first thought was the contrast with the wonderful deep throat blow-job his mother had given him 24 hours previously ... It was those memories ... her inch-by-inch inhalation of his hard shaft ... the feel of her nose against his stomach when she bottomed out ... her tongue lapping his balls ... and the look of delight and lust on her face ... and not Emma’s amateurish effort that started his erection growing.

Emma had no idea that she was not the cause of the sudden expansion of the large cock in her mouth but hummed happily around the bloated head as she took it as deep as she could (which was less than half-way) before releasing it with a flourish. She looked up at him triumphantly.

“There, that should do it and it’s all nice and wet to slide between my boobs.”

She got up off her knees and pulled Alex by his cock over to one of the soft chairs in the room where she sat down and lifted her pendulous breasts with both hands to surround his cock and started to slide them around it. Alex looked on detachedly as though he was observing two other people engage in the sex act before him and noted that the man’s cock was starting to soften again.

‘ Of course it would go soft ... those breasts are too large ... too saggy ... the nipples too small ... no she should have delightful firm handfuls with big nipples... ‘

Alex’s reverie and Emma’s titty fuck was brought to a crashing halt as the door to the summerhouse flew open followed by Rowan’s acerbic voice.

“I think you should put your tits away Emma and leave me to have a word with my son.”

Emma stopped in surprise in mid stroke so the head of Alex’s cock poked out from between her breasts and looked goggle-eyed at the furious woman standing in the doorway. She gasped and pushed Alex away as she scrambled to pull her dress up and ran on tottering legs past both of them, whimpering in fearful embarrassment as she did so.

Alex turned away to tuck his now-deflating penis back into his boxers and pull up his trousers and then turned back to look at Rowan in amusement and his voice was sardonic.

“Nice timing, Mother! You couldn’t have made more of an impact if you had tried.”

The fury rose in Rowan’s face and her voice was anything but calm.

“You disgust me! Fooling around with that ... that ... big titted slapper ... that slut ... floozy!”

Alex laughed.

“Floozy ... Mum ... really ... I don’t think anyone uses that expression any more... ‘skank’... ‘ho’ ... might have been a better word ... not that she is that or any of the things you just called her ... she’s just a modern teenager who doesn’t see the sex act in quite the same sacred light of previous generations.”

Rowan was taken aback by her son’s quiet response but felt that she needed to maintain the moral high ground.

“So you think that it is OK for you to behave that way ... I tried to bring you up better than that ... to instil some sort of moral framework in how to treat women...”

Alex smirked back at her.

“Morals ... this is fuck all to do with morals ... this is about jealousy ... pure and simple. You resent the fact that I was...”

He did not finish his comment before Rowan exploded.

“Jealousy ... what the fuck would I be jealous about with that tart...”

Alex stood his ground and snorted in derision.

“OK, so why have you been pawing your husband ... who you were most dismissive of last evening, I might add ... all day ... if it wasn’t in some pathetic attempt to make me jealous ... to get back at me for showing an interest in Emma.

They were both now red in the face and their voices were raised as they pointed accusing fingers at each other. Rowan however was stung by the comment about her actions with Mike ... mainly because she knew they were true.

“I’m allowed to touch my husband ... don’t get any ideas about you being such a stud and that your performance last night was so wonderful that you could replace him...”

“Well fuck you ... you sure seemed to be enjoying my cock inside you...!”

“Don’t be so disgusting ... you got more out of it...

“You’re a fucking liar ... you came all over my cock like the skanky, slutty floozy you are ... owwww ... what the fuckkkk...?”

Rowan’s palm stung from the slap she had delivered to her son’s face and she paused in shock at what she had actually done ... she had hit Alex! She stood immobile for a nano-second with both hands raised and Alex grabbed her wrists and spun her round to stop her doing it again. Rowan gasped in shock and tried to wriggle free as she ended up with her back to the front of his body and both sets of arms wrapped across her torso; Alex’s head was alongside hers.

They were both still panting from anger at the furious exchange but several things happened at that particular moment and they ceased struggling.

Firstly, Rowan could feel Alex’s hot breath washing over her neck and this immediately triggered the delightful memory of him kissing her ear the previous evening. She also marvelled at how he controlled her body contrasting it with the oh-so polite ways of her husband... ‘ Mike never dominates me like this ... fuckk he’s getting hard ... it’s making me wet ... and she surprised herself by relaxing into his hold moaning as she ground back against her son’s powerful body and growing erection.

Alex’s own memories were triggered by the proximity of his mother’s body ... the feel of her buttocks ... her scent as he held her tightly and these stimuli coupled with the sound of her sexy moan was enough to recharge his cock which had flagged after Rowan’s interruption.

Their responses to each other was nothing to do with some artificial conditioning from their time in the chamber but a memory of the simple physical animal attraction that they had experienced and wanted again, despite the taboo nature of the act.

Pavlovian conditioning perhaps?

Whatever the reason for the response ... the guilt was gone.

He bent his head and gently kissed and nibbled on Rowan’s neck and she whimpered with lust and moved her head to give him free access as his lips moved inexorably towards her sensitive earlobes.

“You are so fucking sexy in this dress ... I wanted you the moment I saw you in it.”

Rowan squirmed against him revelling in the complement but knew that they were seconds away from having more wonderful sex and her voice was breathy as she tried one last time to stop.

“Alex ... please ... no ... stop ... this is so wrong ... fuckkk ... oh yesss...”

Her moan as he nibbled her ear was unadulterated lust but he realised that she had said ‘no’ and pulled back. She moaned in disappointment and turned her head to meet his serious gaze.

“If you really want me to stop ... mpfhh”

She freed one of her arms from his slackened hold around her body and reached behind his neck to pull his head towards her and silenced him with a gentle kiss. Her tongue softly caressed his lips before he responded and their mouths battled gently against each other. They were breathless when they broke apart and Rowan’s voice was husky with desire as her sultry eyes held his gaze

“Does that answer your question? This is wrong but I need you inside me again ... I can’t stop thinking about how wonderful last night was ... even though I know it is against ... so ... much ... everything! Yes, I was jealous of you fooling around with Emma and wanted you to be jealous of Mike ... but ... mmmpfh.”

It was Alex’s turn to silence his mother with a kiss. His eyes were full of understanding when they broke apart.

“It’s OK ... Mum ... Rowan ... I have thought about you all day. I’m sorry about Emma but you made me so angry with how you behaved with Dad ... well ... I had to strike out ... but do you know what ... just then, before you came in it wasn’t her blow job or titty fuck that made me hard ... it was the memories of your wonderful mouth on me and the feel of these gorgeous boobs...”

With that he slid his right hand in through the gap in the front of her dress and palmed her firm left breast, unfettered by any bra. Rowan moaned at the touch and they both felt the nipple harden against his hand. He then moved his left hand inside her dress to gently stroke the engorged nub of her right breast with his fingers.

“ ... I was thinking only of us having wonderful sex together.”

Rowan pulled his face back for another kiss, more passionate and lust filled this time, and whimpered as she arched her back pushing her aching breasts firmly into the palms of his hands and her buttocks back against his rigid shaft. Alex’s answering moan was lost in his mother’s kiss as their lips duelled against each other and their tongues raped each other’s mouths.

Alex relinquished his hold on Rowan’s left breast and ran his hand down across her taut stomach and lifted the hem of her dress before cupping his mother’s swampy vulva. Her tiny thong may as well have not existed as it was impossible to tell where damp material ended and puffy wet labia began. Craving the touch of her son’s fingers on her pussy Rowan spread her legs to give him better access and he pulled the scrap of material to one side as he pushed two fingers deep into his mother’s sodden core. They moaned barely intelligible words into each other’s mouths as they continued to make out furiously.

“Fuckkk ... you are so wet...”

“Yes, baby ... wet for you ... for your cock.”

He pulled his fingers from her dripping pussy and broke the kiss while maintaining eye contact as he sucked her juices from one of them.

“Jesus ... you taste so good ... here you try.”

 
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