(Just a bit of context: Your moms name is Alice, you have two twin sisters, Ruth and Ruby, they've all had a history of torturing you and no just with farts, and yes you're adopted)
You froggily woke up from your slumber and tried to rub your eyes, *Clink* you shifted your head and muttered in surprise, you were chained onto a bed.
"Well well well, looks like the toilets up and running now" giggled Alice
"What.. what the hell are you talking about mom?"
"Didn't you know? It means this!"
Alice tears off her stockings, rubs them inbetween her asscheeks and shoves it in your mouth, you gag in disgust but it wasnt over yet... she lifts her ass over your face and
"PPPSFFFFFFTTTT"
"Ugh jeez that was a stinker, silent but deadly's am i right?"
You couldnt cough or breaths through your mouth so all you could do was inhale her rancid eggy farts
"And i just have to tell you i think Ruth has to really go to the toilet, she had waaaay too much mexican yesterday" Alice laughed.
Alice exits and Ruth sprints into the bedroom,
"Whew, mom sure did a number on you didnt she huh? Oops i forgot you couldnt talk" says Ruth deviously.
Ruth takes the stockings out of your mouth and you gasp for air
"U- ugh, thanks ruth" you wheeze
"Oh dont thank me yet, you still have a job to do toilet but im going to make this a bit more entertaining"
Ruth puts some sort of device onto your wrists and legs and then takes your chains off
"Ill say this now if you even think of running away the things on your arms and legs, yeah they're gonna zap you"
You didnt buy it and bolted, when you were a 5 feet away from her it was as if you were struck by lightning and you screamed in pain.
"Well didnt i tell you idiot, pull your pants down and sit down"
Tears welled in your eyes as you did as she commanded.
Ruth sits on your face and spits on your dick and jerks it slowly while getting all of the sensitive places on your penis
"Wanna cum baby brother do you wanna cum?"
"Y-yes" You moaned.
"Good you fucking idiot"
She rips a huge one into your nostrils "PHHHHHRRRRBBBFFFFFSSTTTTTTT"
You start to get soft in disgust
"NO! You are not getting soft you wanted to cum right? So you're going to cum to my stinky farts, so start jerking if you dont want to get zapped again!"
You sobbed into her ass as you started stroking your cock, which strangely started to get hard to her farts.
"Faster! Stroke your cock to my farts you pathetic fucking toilet!"
You stroked even faster, the feeling of pleasure and cum rising in your dick hit you
You sniffed aggresively, enjoying the musky scent of rotten cheese and meat deep in Ruths ass
"I got another booty bomb coming your way you better make sure to finish!"
"PHHHHRRRBBBBBBVBBFFFFTTT"
The stench of rotten meat invaded your nostrils, you could feel you were about to cum so you took on final whiff and let it go.
"Ughh, you got it on my legs you sick fuck, put your pants on and wait until Ruby comes fart face" says Ruth as she wipes her ass on your face and goes.
"I didn't really believe it when mom and Ruth told me you were our new toilet but i guess its a dream come true huh?"
Ruby takes ofd her socks and rubs her cheesy, sweaty feet on your face, you gag at the rotten smell.
"I havent tooken a shower since like... last week so you're in for a big surprise!"
Her foot enters your mouth and you're forced to suck on her feet,
"If i can see a dirty spot on my feet, well... Zap!"
You lick the gunk from inbetween her toes and her feet, you didnt want to get zapped so you did as she asked.
"Need some water to flush down breakfast?"
She rubs her pussy on your face and your mouth opens, naively thinking it was going to be your first face ride, a warm liquid enters your throat and you could either choke to death or swallow so you had to swallow.
"Mmm, what a good toilet taking everything coming out of your users stinky butt, speaking of stinky butts i reaally have to take a dump so watcha say toilet? I shit in your mouth and i'll go away, or you'll stay the night strapped onto my asshole so what do you say?