You try being nice, but Katie wants to be naughty.

"Oh please, sis." Katie rolled her eyes and smirked mischievously at her sister. "Just ASKING him to keep quiet? This is a real juicy secret, and you've been hiding it from him since you both started started at the uni. He's probably furious. You can't expect him to keep his mouth shut with just that." Kenny blinked in confusion, not at all furious and actually quite willing to keep their secret. "W-well..." he started, but Katie cut him off. "Now, you gotta offer him something a little more concrete if you want to be sure he'll keep those lips sealed, you know?"

Kirsty looked a bit taken aback. "R-really?" she responded. "But...I don't...are you sure?" "What? N..." Kenny started off. "Positive!" Katie interrupted, kicking Kenny in the gut. "You're lucky I'm here, Kirsty. Your big sis will look after you." "You're only older by about 10 seconds..." Kirsty muttered. "So, what are you suggesting we offer, if you seriously think we have to?" Katie grinned widely, with a wicked look in her eye. She walked over and wrapped her arms around her sister, the two of them looking over at Kenny.

"Hey Kenny-boy. You keep quiet about me, and we'll suck your dick!"

The room had a bizarre silence as Kirsty and Kenny took in the offer, before they both exploded with a load "WHAT?" Katie laughed her cute little ass off at their reaction. "Jeeeez, sis, you don't know? Everyone knows you gotta pay uni guys in blowjobs, it's practically more important than air to them!" Kirsty shook her head violently. "Oh that is bullshit! You're just being slutty again. You're always hitting on guys, don't drag me into this!" Kirsty turned around in a huff, and Katie snuck up behind her, grabbing her boobs and eliciting a yelp from the confused younger twin. "Aww, come on. What happened to "Love thy neighbour"? Besides, you can be 100% certain he won't be telling anyone!" Kirsty wriggled around. "Don't be ridiculous! Kenny wouldn't tell anyone, anyways. Besides, I bet he doesn't even want a blow....job...." she stopped wriggling as she looked at Kenny's reaction, or rather, his cocks reaction. The tempting offer and the teasing from the two sisters had more than gained a reaction from the hefty beast, and without Kenny's approval, it had risen up to greet the blonde twins. Kirsty's eyes went wide and her mouth drooped open at the sudden appearance, while Katie let out of an approving whistle and grinned wickedly. "Mmmm, I think he DOES want a blowjob after all, sis." she whispered to her little sisters ear. Kirsty gulped. "I...I dunno...I've never actually done one before..." Katie looked shocked. "Woah, really? Huh. Would have thought someone had gotten one out of you by now." She raised a leg and booted Kenny onto the bed. She then pushed her sister down on her knees before joining her between Kenny's legs, face to face with the leashed monster cock. "Well lucky Kirsty, you're getting a crash course from yours truly right now!"

Kirsty sat transfixed by the situation, baffled by her sisters insistence and by Kenny's huge bulge. Katie skillfully handled Kenny's belt, and when his pants were loose, she reached her hand straight down without a second though, gaining a yelp from Kenny this time. She moved around and took a firm grip of the fat meat hiding within. "Ohhhh man..." she whispered. "Kirsty babe, I'm throwing you in the deep end here. Close your eyes." Kirsty blinked. "Umm...wha?" "Sis, stop obsessing over cock for a second and close your eyes." "Oh..uhh...ok..." Kirsty complied obediently. Katie then yanked out the long cock, still growing to full hardness, and used it to smack her sisters cheek. "Gah!" she exclaimed, "What the hell was....oh wow..." She stared at the raging cock-cannon before her, which was just about reaching it's full size from the fondling Katie was giving it. Katie grinned lewdly. "I know, right? Trust me, you won't find many cocks like this around, so make sure to savour it." She licked her lips. "Like this. I'll start slow." Katie lowered her mouth to the raging cock, that twitched in pleasure as she laid kisses and licks over the tip, suckling gently on the head and rubbing her hand up and down the length slowly. Kenny moaned at the soft, amazing sensations. "Mmm..." she hummed out, and laid a big kiss right on the tip. "Alright, sis. You try." She pointed the monster cock in Kirsty's direction, and she gulped loudly, but still bravely brought her face closer and closer. She sniffed a little at the oversized shaft, then gave it a quick, light kiss before backing away blushing.

"Ha! Bet that was your first kiss as well!" Katie laughed out. Kirsty shook her head angrily. "It was not! There's a difference between a blowjob and a kiss, you know?" "Yeah, one's way more boring." Katie grinned. "Alright, lesson two. We're gonna try and get this beast nice and wet." She moved in and took the head of Kenny's monster cock in her mouth, roaming her tongue around and coating it in her drool. As it dripped downwards, she used both hands to rub the moisture up and down the length. She let the cock free and turned to Kirsty. "Try spitting on it. It'll help get it wet, and guys love it." "They do?" Kirsty asked. "Well, the real perverts do. You're one of those real perverts, aren't ya Kenny-boy?" She looked up and questioned Kenny, who nodded in response before realising what he had just agreed to. "Ha! Knew it as soon as I saw ya!" Katie went back down and started sucking on the head, making light slurping noises and gagging herself to produce more spit. Kirsty looked into Kenny's eyes and steeled her resolve, then moved inwards and lightly spat at his huge cock, making it throb in response. Then, she added her hand to Kirsty's, moving up and down to spread it around. Katie made what sounded like a "Well Done", but was muffled by the huge cockhead, so she let it out, catching her breath. "Ok, now you suck on it like I was doing." Kirsty blushed a deeper red, but didn't bother to argue. She just shifted herself so she in the correct position. "Just...tell me if I hurt you, ok?" She said to Kenny, looking up at him through her long eyelashes. She then took a deep breath and shoved her little mouth with cockmeat. Kenny felt a twinge of pride for claiming her first blowjob, and it made his cock twitch in her mouth. Katie started spitting up and down the huge shaft with more vigour than her sister, rubbing it all over. She licked her lips and dove downwards, taking his huge balls into her slutty mouth, sucking and drooling over them with abandon. The double twin service was overwhelming, and Kenny leaned his head backwards with a moan. Katie giggled with his balls in her mouth, making them feel even better. "Shee?" she mouthed out with a mouthful of nut. "I told you he wants it..." Kirsty didn't respond, she simply started sucking harder and tried to jam more cock into her virgin throat.

Kirsty was taking more and more of Kenny's cock without instruction from her sister. Katie blushed a deep red from her excitement, seeing her cute little sister swallowing some monster cock way too big for her to handle. She let his balls loose and started kissing and licking along the base. "Keep going, Kirsty. Get him addicted to your little mouth..." Katie moaned out huskily. "Make him your blowjob ****, always needing his fix. Make it so he can't imagine a single day without throatlocking his fave blonde blowjob toy. He won't even be able to masturbate anymore, he'll only be satisfied with a blonde bitch blowjob. He's right next door as well, that's gonna be rough, huh Kirsty? Every night he'll be knocking on your door, boner in hand, grabbing those cute twintails and using them as facefuck handles to slobber over his monster cock..." In response to this dirty talk, Kenny was inspired, and took a hold of Kirsty's twintails. Her eyes went wide as he started using them to pump deeper and deeper into her little throat. Katie made a mock gasp. "Oops! Did I just give him some ideas? So sorry, sis. Try not to **** on that monster dick. If you pass out, I dunno if he's gonna stop." Katie grinned lewdly, then looked downwards with a smirk, seeing her sisters fingers plunging into her wet little pussy, losing herself in the moment and masturbating along with the steady throatfuck. "...hmm...I may have created a perfect little whore, huh? Welp, already gone this far. Might as well..."

She stood up and moved onto the bed, draping her arms over Kenny's shoulders and whispering right into his ear like a bad conscience. "Look at that face...she's addicted, Kenny-boy. I bet we could convince her to go farer than this...you claimed her little throat for yourself, so..." she laid a string of kisses along his neck and cheek, "...why not claim some more? I wanna see her get fucked...and I know you wanna fuck us both...and, well, I wanna get fucked by that horsecock as well..." Kenny moaned in ecstasy, his cock pulsing hard in Kirsty's battered throat.