You wake up in a particularly good mood, feeling alert and refreshed. You note on how it probably has something to do with that playlist Willow gave you. "She's got a really good taste in music" you think.
You decide to take a shower before anything else, noticing for the first time that you're buck naked you just walk down the hall and into the bathroom. You turn on the shower and once it was a sufficient temperature you step inside.
You go through your usual pattern of washing your hair first then woking your way down, but when you reach your gut you notice something's amiss. There's dry cum splattered all over your thighs and stomach. "What the hell?" You think "How did this get here? I didn't masturbate last night!" You wondered, before realizing that it doesn't matter where it came from and that you should just clean it up and forget about it like a good boy.
While cleaning your thighs and legs, one of your hands idly scrubbed into the backs of them, slowly creeping upwards with you barely noticing. Eventually your hand is sliding up into your ass and one of your fingers insert themselves into your hole. You let out a small moan at the filling sensation and start pumping them in and out. You slowly bend over and think about much better it would feel if you were even more filled and a second finger joins it.
Soon enough your mind begins to wander as your pointer, middle and index fingers pump in and out of you. You think about the position you're in and what it would look like to someone walked in on you. God, what if one of your family members saw you like this? Oh lord, what if sweet, innocent, at-the-legal-age-of-concent, young Sarah wandered in here and bared witness to this!?
She'd probably find it really hot.
Instantly the look of shock on this imaginary Sarah became a smug grin as her lustful eyes glared at your exposed asshole. She starts to sway her hips sensually and walk towards you, keeping her eyes on the prize the entire time. You notice that her shorts actually fall a couple of inches with every sway and about a foot away from the shower they fall off entirely.
Looking over your shoulder, your eyes widen in surprise when you see the monster in between Sarahs legs. It's entirely flaccid yet still hangs down past her knees and it's incredibly girthy. The way she's just swaying her hips back and forth made the python swing in a hypnotic way. The vision encourages you to moan out loud as your finger yourself with even more ****.
Sarah finally reaches the shower and steps in behind you. "Wow Dougy! Mommy told me you're a slut for big girlcock now but I never would have thought to this extent!"
You manage to say "i'm a slut for big girlcock" in between your moans and Sarah just giggles and grabs her dick. It immediately starts growing, and growing, and growing. The piece of heaven attached to your little sister inflates up to a monstrous two feet before stopping. Filled with mindless need, you start wiggling your hips and making begging sounds.
"You ready to become your little sisters bitch?" you rapidly nod your confirmation. "Christ, talk about role reversal. If i'd known you'll do anything for a big cock I would've made you my **** a while back."
The thought of being dominated by your little sister, your little sister of all people, immediately put you edge. Her small hands drags yours out of your ass and you feel her cock head up against your ass. After a moment of nothing but the sound of the water spraying out the shower head Sarah pops just the tip inside you.
Orgasm
The white hot pleasure and Sarah's sweet giggles fills up your head as your, up until this point ignored, cock erupts all over the shower floor. You throw your head back and let out a moan that you would later hope no one heard.
As the pleasure subsides and Sarah's innocuous laughter fades away you pull the fingers out of your rectum and finish up bathing.
Heading downstairs and into the kitchen your greeted by the glorious sight of your MILF of a mother. She looks over at you and smiles "Hey Doug, I've got something pretty important to tell you..."
