Note: This story was dynamically reformatted for online reading convenience. Max slid in behind Katie's cute little butt, wriggling his erection against her pert, 12-year-old ass, a hand grabbing a soft, budding tit as he nibbles her ear. "Wake up Katie... big brother needs to work on his stamina training for Friday's game..." He hisses, sliding her cute cotton panties down. Katie rubbed the sleep from her eyes, smiling up at her big brother. "Endurance training?...Mr Johnson told us about that last week...he even demonstrated it on me!" she says, rolling over into the doggy position. "You don't get to go to bed until you've cum in each hole Max! I won't let you!"Max smirked and turned her to face him on her hands and knees, his hands grabbing her pigtails. "First you've got to get Mom's cunt juices off my cock!" He said, ramming his length into her cute little mouth. "Unnnnh... such a hot little bitch... shoulda been fucking you for ages..." As Katie eagerly swallowed down Max's cock, he noticed a dribble of white seeping from the corners of her mouth. "Have you been sucking someone else off?" Katie nodded emphatically as she tickled his balls. "I wanted some more allowance money...so Daddy says I can get 5 dollars a week if i suck him off every night!" She grins and licks her lips clean..."I guess you can say i'm a prostitute!" He smirked wickedly down at her, before spinning her around, rubbing his cockhead against her asshole and pussy. "So much more eager than last year," He taunted, giving her ass a violent smack. "You cried sooo hard when Mommy held you down at the start of the season last year!" He smirked and slammed his cock home into her pussyhole. "Now you suck Dad off for money..." He groaned as her cunt clamped on his prick. " "Shit... if you want money," He hisses as his hands come to maul her tiny titties. "I'll give you $100 if you help me fuck Amanda." his cock jerking at the thought of Katie's red-headed friend with tits larger than girls in high school despite being the same age as her. Katie smirked back at Max, moaning as her little cunnie was stretched wide by his thick cock. "Amanda? You do know I saw her in the kennel... sucking off the doggies right? You wanna stick your big prick in her tight little hole? Ok... but $140!...and I get to be there too!" Her sweet, naughty face made Max's cock achingly hard. "Shit... $120!" He countered as he pulled his cock out of her sex and rammed it home in her ass with no preamble. "And I'll teach Fido how to lick your slutty little cunt. And you have to suck my cum from Amanda's fuckholes!" Katie moaned and squealed! Only Daddy had been in her ass before..."Hhaa....uugh! Deal!...and Fido better know how to mount and knot me!" she screamed, as she came hard, her face plastered on the bed with her fingers crammed in her cunthole. Her clenching ass was too much. Max's hand on the back of her head forced her down, making her raise her ass as he came inside her. "He'll rape you until the cum leaks out your whore mouth!" He shouted as his seed plastered her asshole, making him collapse atop her. They lay there for a while, until Katie sat up, and rolled Max over. "Hey... wake up! You're not done!... you still got my mouth and cunt to fuck!" she whispered as she lowered her cum stained crotch onto his semi-flacid fuckrod.