Seeing Kate enjoy her soda piss as much as you enjoyed drinking it left you curious as to how it would feel? "I think its time I started enjoying this power for myself. I too pee cream soda and shit fudge icing!" You didn't feel any different after you said it but you had to find out. Taking an empty glass in your room you pulled out dick and proceeded to release your bladder.
Fizzy amber liquid shot out from your dick and foamed in the glass. The experience was surprisingly stimulating and as you peed your member became erect, this made it hard to keep the stream aimed in the cup and soon you sprayed some cream soda on the wood floor of your room as your bladder emptied.
The cup of cream soda in your hand fizzed and crackled with carbonation and with nothing else better to do you decided to take a sip. It was pretty good as far as soda went, for some reason it wasn't as good as you remembered your sisters tasting. In fact it dawned on you that it was hot, your sisters had been warm too. Makes sense, it was still stored in your body after all.
"Hmmmmm. All soda flavored body fluid is ice cold." Instantly the cup in your hand was frosted on the outside, little vapor wisps running over the edge. Taking another sip the cream soda was now perfect! Cool, fizzy, sweet and refreshing you didn't even notice you'd finished the whole glass until the foam was running down your cheeks from the upturned glass.
With a refreshing gasp of air your attention was drawn elsewhere. Namely the stiff member that persisted between your legs. "Hmm, if peeing made me hard, I wonder..."
You took your cock in hand,and sat on the edge of the bed and started jerking off. Today had been filled with so many lude things its surprising you hadn't done this sooner! Most present in your mind was growing your mother and changing your sister! Your mom stretching taller and loading on pounds of muscle, watching her breasts inflate larger and how she easily picked up your sister and coddled her as she left to change her diaper.
And Kate! God Kate was the best now! Making her soil herself in front of you was wild even more after you'd made her enjoy it. Then the goth makeup, that absolute black void of her hair and making her pee for you right in your mouth with a smile on her face. She was a bitch before but you powers had made her more tolerable now, hotter even if only for the control you now had over her.
The final though of watching Kate smile down at you as she peed into your mouth and asked you to put her diaper back on sent you over the edge and you came hard from the memory!
The orgasim was the most intense you'd ever had, sitting down you tried to buck your hips with each gushing surge that erupted from you tightly gripped cock. The unusual hissing sound drew your attention to you cock though! Instead of thin white strings of cum your clock was launching a brownish geyser of bubbly foam that arched nearly 3 feet in the air! You suddenly recalled a video of someone dropping mentos candy into a liter of cola and watching it rocket out the cap violently. The sight was a perfect recreation only scaled down to your average sized dick. You were also aware of the cold sensation of it flowing up the hot shaft of your cock, the contrasting sensations further stimulating. When you finally stopped cumming you surveyed the mess you'd made of your room. Puddles of cream soda and mounds of your foamy cum littered the open space of your room.
You thought of grabbing a used towel from your hamper and soaking up the wet mess yourself, but decided to enjoy another spectacle instead...
"Kate loves cleaning up my messes with her mouth, and she'll come to my room and discover one right now"
A moment later Kate passed your door way only to pop her head back in and give a quick sniff of the air.
"Ah! You made a mess!" Kate said with a cheer and a giddy smile while clapping her hands excitedly! "He stay put, let me clean it up." She dropped to her hands and knees and with her mouth started slurping up the cream soda foam and puddles you'd just pissed and cummed. Seeing her cleaning up your floor reminded you that Kate didn't have a job and that she'd no intention of getting one or a career for that matter. so you took it upon yourself to help her out.
"Kate has her own made cleaning service she runs, and likes to ware French made outfits for her job." Instantly Kate's old band t-shirt was replaced with a black and white ruffled corset and a white bonnet on her head, tying back her jet black hair. Her black and red diaper was visible under her lace skirt and apron and she had white elbow length gloves and black high heels.
Your sister now a professional cleaner made quick work of the wet mess on the floor and rested on her knees before you, wiping away the last dribble of soda from her mouth with her arm. Her black goth make-up was running from her sweat and smeared black lipstick ran across her cheek. She was a total hot mess, and you were loving it!
"Anything else you need cleaned little bro?" She asked you as she placed a hand sown to stand up...