for a Month

Her face was flush, her eyes distant with a heavenly afterglow. She looked so happy! And you suspect it wasn't just her orgasm making her feel this good.

"Elsie. What has gotten into you!?" You demand.

Her smile widens. "Master, such a strong manly tone. I like it. I want to be your ****, I knew you wouldn't accept it normally. But now you have to. You swore on Daddy's grave."

Shit, you did too.

"El, I am NOT happy about this! We were supposed to take on Fiona together. If I fell short you were the back up! Did you hear what she wants to do to Allison!?" Fucking hell, if Fiona won how the heck would you even bring that up with Allison? 'Oh hey baby, I wagered your pussy with my donkey dicked sister, hope you don't mind.' Fuuuuuuck. And if Allison did somehow agree!? Oh Jesus, your sister would split your girlfriend in two! "El, El, EL! It wasn't supposed to go down like this."

"I'm sorry master. I was terribly duplicitous. But I saw an opportunity and I took it. Am I a clever ****? Am I naughty ****?"

"GAH! You're my little sister!"

"And your ****." She beams. She sits up, her creamy wad oozing down her smooth tummy. She nods with conviction. "I'll understand if you want to punish me for my deceit. I deserve it. I hope master isn't too hard on his ****. I'm still new."

"Punish you!?" You slap your forehead. "Geez, stop taking this so seriously. Come on El, it's just you and me here now. You don't have to act like this."

She cannot stifle a little giggle. "Yes I do, and I want to. More than anything. I think...I'm going to enjoy this month. Very much. Master."

"El would you stop."

She shakes her head. "We made a bet. We gave our words."

It was true. If you would have sworn on anything else, anything at all, you wouldn't think much of breaking your word. But the memory of your father was the one sacred thing the three Bailey children truly shared. This was an oath that you could not break.

Try as you might you cannot stop yourself from admiring her naked flesh. She might be your sister but god damn El had a body on her! Such perfect proportions, such pristine skin, ideal breasts. Fuck...little Elsie had it ALL. Your eyes then rest on her gooey half erect cock. She had it all...and then some.

"Do you like my body master?" She asks timidly. "Does master desire his ****? Do I please you sir?"

"No...I mean...yes...I mean...no...I mean...God damn it. Don't ask me that."

"I'm sorry, I understand." She nods sadly.

"El...it's not because of your...um...you know. It's just, you're my sister. I'm your big bro. Don't you understand?"

She shakes her head. "No master." You could sense her self consciousness about her condition rise up in her, though she makes no move to cover herself from her master. "Thank you for letting me serve you. I really appreciate it. I know a normal girl would have been preferable, but I'll do my best. I promise."

You let out a breath of exasperation. She was obviously very insecure about her family mutation. "Elsie, you're hot, okay? Like super hot. Just...grrr. I don't know what to say here."

She smiles as sweet fragile smile at your compliment. "Thank you master. You are very kind." She looks down at her messy body. "Master, may I go wash myself?"

"Oh my god, we're really doing this." You sigh. "Fine, yes, go wash yourself. You are a mess. Go take a shower."

"I am a mess. I'm a filthy little ****. I'm sorry master." She swallows, gathering her bravery. "I would be very happy to wash you too master. May I wash you master? I could undress you. Lather you up..."

"NO!" You bark. "Get out of here!"

"Yes sir!" She scrambles to grab her clothes and scurry from the room. "Yes sir!" She says again as she dashes up the stairs.

Fiona was rounding the corner from having washed her hands. She was tying her long blonde hair back in a pony tail as she watched her little sister go. "God damn, I've never seen her so happy." Fiona marvels. "Wow, I knew she was meek but this...wow! A true submissive, through and through. She is amazing! A perfect ****. Damn it, I wish she'd given herself to me. I'd know how to treat her."

"Fiona, this is messed up. Why is Elsie acting like that? Why is she acting so crazy?"

"She's her mother's daughter." Fiona states point blank.

"What the hell is that supposed to mean?"

Fiona just laughs. "God you're dumb. Good thing you're cute."

"Hey I'm not dum..." You freeze mid word. Did Fiona just say you were cute!? Did Fiona think you were cute!? That was the first nice thing she'd said to you since...you didn't know when! "Wait...what did you say?"

"I said you're a dumb fuck with a useless dick. I gotta go shrimpy. Catch ya later." She heads for the front door.

"No, you said I was cute!" You call after her. "You said it!"

"Ha!" Is all she says. Grabbing her jacket she struts swiftly out the door. "Have fun with your new play thing." She calls back as the door closes behind her.

You sit on the couch absolutely dumbfounded by what had just happened over the past fifteen minutes. Holy shit. This was some predicament you were in. You were in a wager with Fiona that you simply HAD to win. You had to last thirty days without cumming. You'd never gone that long without rubbing one out! You'd have to ask Stephen about some tips and tricks to make it through.

Not only could you not jizz, now you had a red hot eighteen year old sworn to do you every bidding. You had a **** ready and willing do carry out your every desire. Good thing it was Elsie. Any other hot girl her age and you weren't so sure you'd be able to control yourself. If it had been Allie you'd be up there giving it to her right now. But not Elsie...no, not Elsie.

You think about her young curvaceous body. You think about those flawless tits, bigger and...nicer than Allie's. Round apple ass. And those cute little noises she made, that adorable blush on her cheeks. You think about those dark submissive eyes peering up at you...

You shake your head violently. God damn it man, get a hold of yourself. Thirty days suddenly felt like an eternity.

Good thing it was Elsie...good thing it was your little sister...you wouldn't be tempted by your little sister.

Picking up your text book you open it to the page you had been staring at and try to read once more.