Deborah grabbed her gym bag & headed for Sally's house. Watching his mother's car until it turned the corner Luke couldn't wait to wake his sister up & tell her that they had nearly 5 & a half hours before their mother would return. He was eager to start his life as a submissive Cockslut he hoped that his older Sister was serious he walked to the kitchen & after a quick bowl of cereal & a few slices of toast he switched the kettle on while waiting for it to boil he quickly pulled his T-shirt over his head, then stepped out of his boxers. From all the stories he'd read on the Internet Luke knew that he should be naked when he woke his Mistress. So a few minutes later a naked Lukey baby carried a tray with his Sister's morning coffee up the stairs towards his Mistress's bedroom lightly tapping he heard his sisters sleepy voice.
"Come in it's open."
Head bowed Luke pushed the door open.
"Morning Mistress Katherine I hope I haven't done the wrong thing by bringing your cuppa. Mother has gone to the Gym she told me to say that she wants to talk to you about Gavin."
Luke didn't want to slip up & say (to tell you) any slave worth their while wouldn't make such a basic slip up.
"That's Okay my little Lukey Cockslut, I'm glad to see that all the time you've spent surfing the Net hasn't been wasted. From now on whenever you enter this room you will be naked unless I tell you otherwise, Clear Cockpig?"
"Yes, Mistress Katherine your Cockslut is to be naked whenever he enters your domain unless ordered otherwise."
"Very good now don't you forget it Lukey Cockslut."
"I promise I won't forget Mistress Katherine."
Kathy threw her doo-na back revealing that she is almost naked, she is wearing a hot pink baby-doll nightie minus the panties. She swings her legs over the side of the bed putting them on the floor about two feet apart Luke could clearly see his sisters naked labia he felt his cock start to twitch. Noticing her little brothers prick beginning to stir Kathy said "on your knee's slut, crawl over here & lick your Mistress's cunt till she comes all over your face."
Obediently Luke dropped to his knees & crawled between his sister's legs Kathy opened wider for her slut's tongue. Holding her coffee in one hand the other she grabbed a handful of her Brother's hair & guided Luke's tongue around her pussy. Gulping down the last mouthful of coffee Kathy put the cup on her bedside table then grabbing two big handfuls of hair she ground Luke's face against her soaking gash. "Lick your Mistress's cunt you fucking Cockslut eat my juicy cunt Lukey you cum lover, agh suck on my hole Lukey baby."
"Yes, Mistress Katherine your wish is my command." Came Luke's muffled reply. He was busy holding her cunt lips apart while his tongue ran along his sisters dripping snatch, stabbing her fuck-hole with his tongue on each pass. Kathy was amazed how quickly her sibling had taken to muff diving, before she came Kathy pushed her brother away. She flipped over & got up into the doggie position then reached into her bedside drawers bringing out the 9" black vibrating dildo that Jade & Helen had given her. Looking over her right shoulder she positioned the large rubber cock against her dripping pussy, her brother was starring at his sisters pouting sex & cute ass, this soon had his cock pointing at the ceiling.
"Lick your Mistress's anus while she fucks herself with a real cock not a puny thing like yours Cockslut." Luke didn't say a word he just held his Mistress's butt wide cheeks apart while he slowly licked her puckered anus. Kathy was busy ramming the big black dick up her gash, she was in heaven it had been far too long since she'd been so happy. Feeling herself nearing her first orgasm for the day Kathy said. "Ram that tongue up my shitter Lukey baby, fuck my asshole with your tongue Cockslut, rim your Sister's ass for her ya fucking Cockslut."
Luke did exactly as ordered he shoved his tongue at his Sisters tight sphincter gradually she relaxed enough & his wet probing tongue penetrated her shitter, then he started to fuck her anus in time to her strokes with the dildo.
"Yeah Cockslut that's it rim your Mistress's shitter. Fuck my ass hard & fast Cockslut, fuck your Mistress's ass while she dildos her cunt. Agh that's it Cockslut tongue fuck me harder Ass-whore."
With his hands around his sibling's waist Luke pistons his wet tongue driving it deep into his sister's twitching anus, he could feel the dildo vibrating in her cunt with each stroke. Katherine heard her brothers muffled voice.
"Oh Mistress Katherine I love worshiping your asshole."
"Shut the fuck up & don't you dare stop your tongue fucking of my arse till I tell you Cockslut or you'll get a whipping."
Luke didn't say another thing he just bit his lower lip & continued pumping his tongue into his sisters butt. Kathy turned the vibrating dildo up to full speed & rammed all 9" into her gash she started to shudder as wave after wave of wondrous pleasure washed over her sweaty body. Every nerve fiber felt heightened as each vibration sent fresh bursts of ecstasy to her brain. Here she was with a monster dildo deep in her pussy & her brothers face between her ass cheeks with his tongue buried up her arse probing her bowels. "What a fucking slut I am, yeah & you absolutely love it to don't you, Katherine Jenson? Fuck yeah." Kathy thought to herself.
Looking over her shoulder at her Brother, Kathy slid forward just enough to pull herself away from his wet tongue & after slowly sliding the dildo from her twat she gave it to Luke.
"Here Cumslut put that mouth of your's to use & lick your Mistress's cum off that Cockslut."
Luke took the large black dildo & greedily lapped at his sisters juices covering the fake cock, he closed his eyes & found he was imagining that it was Johns cock that he was cleaning his sister's cum off. Since Luke's eyes were closed & he was obviously enjoying the dildo Kathy asked.
"Whose cocks are you imagining that fat dildo is? Eh Lukey Cockslut?"
"John's Mistress Katherine his is a touch longer though, but this is a fantastic substitute Mistress Katherine."
"Show your Mistress how you can deepthroat it then Cockslut."