I woke up to something that had grown to be more routine than I'd like to admit.  Austin was standing above me in the crib that had once been his younger brother's.  As soon as he noticed I was awake, he put a pacifier in my maw.  I complained the first few times he'd done this, but I learned not to struggle.  Even though I was his stepfather, the magic of the collar that my stepson had unknowingly put on me left me impotent against him.  My wife was on a business trip, but Todd was another story.  I'd had to pretend to be his 'baby brother' for a full week now.  I didn't know when the magic of this collar would wear off, and Austin wasn't keen on telling me.

I whimpered as he undid the tapes I saw what was below.  A very wet diaper and my caged cock graced my view.  I watched as he changed my diaper, suckling the pacifier for comfort in a way that I'd grown accustomed to.  

Austin pointed to the side where a sleepy Todd walked into the room, clutching his blankie, rubbing his eyes.  The 5-year-old wolf poked my diaper.  "Did baby bwo have to go potty?"

I'd learned over the course of the week to just play along or else Todd would think it wasn't a game anymore.  So I nodded, made very shy by the fact that he'd found out that I'd actually started using the diapers.  When was he going to get tired of playing house, though?  I wouldn't be able to hide the accidents then.

Todd walked over to the calendar on the wall and put a rainy cloud sticker on it.  There were already 7 in a row, with no suns anywhere on it.   It originally had the name "Todd" on it, but it'd been crossed out and "Ruffus" was now written on it.  

"Back to bed, baby bwo!" Todd ordered, petting my head.

It didn't take much.  I hated to admit it, but the diaper was very comfortable and the magic of the collar forced me back to dreamland.

***********************
I woke up suckling on what I assumed was my pacifier, but I felt something warm slide down my throat as I suckled.  It felt good.  As I slowly drifted back to conciousness, I saw Todd over me on the crib feeding me a bottle.  A blush forced its way onto my face.

"You're really good at playing baby!" Todd said, excited.

"And you're a very good big bro, Todd." Austin said from below me.  Once again, I was caught in a wet diaper.  It must've been midday by now.  Had I been asleep for over 8 hours?  "It helps to distract babies with a baba so they don't cry while they're being changed.

"What's that thing on his weewee?" Todd asked, sending a shiver down my spine as I looked in fear at Austin.

"It's a cage to protect his little weewee.  Remember how small it is?"

Todd giggled.  "Yeah!  It's smaller than mine!"

Shame filled me as I continued drinking down the bottle.    Here I was being changed by my older stepson as I was being fed a bottle by the younger stepson.  Just a year earlier, I was changing Todd's diapers.

"Why does it have a lock on it?"

"Because babies can't be trusted to keep it on."

"Ohh," Todd giggled.  "He's done with his baba.  What should I do?"

"It's fine.  I'm done with his change now."

Todd suddenly sounded very nervous.  "Hey Austin?"

"Yeah Todd?"

"Is it weird that my weewee gets bigger when I see Ruffus all wet in his diapees?"

Austin paused.  I too, sat with my mouth agape.  He was a little too young to have this talk.  "Is that so?" Austin asked.

Todd nodded nervously.

"Austin," I started to say, shaking my head.

"Suck on your pacifier, baby" Austin said, forcing one into my maw.  I was forced to comply.  "Todd...what makes it bigger?"

"Umm...I dunno.  I just like seeing Ruffus in wet diapees."  

"Well he's dry now.  Do you want him to still be in his wet diapees?"

Todd looked away and blushed.  "Is that bad?"

"No.  Wolves like us can do things like this and it's okay." Austin said cryptically.

"Like what?" Todd asked.

"Get up, Ruffus."  I glared at him, but I had to comply.  "Bend over."  Once again, I complied, but I felt very weird about this all of a sudden.  I couldn't see what was going on, but I jumped when I felt him pull down the back of my diaper.  Even more alarming, I felt his cock brush up against my tailhole.  I was still sucking on the pacifier and couldn't tell him to stop.  Just as I thought he was about to penetrate me, I felt a warm sensation filling my crotch.  I thought I was peeing until I realized that it wasn't coming from me.  He was peeing in my diaper!  Although I couldn't speak, I whimpered as I saw Todd looking down at me, mouth agape.  What's worse, his underoos were tenting before my eyes.

"Alpha wolves like us can use mutts because they're not real men like us.  Do you want to try?"

Todd looked at me and frowned, "but then Ruffus might not want to play anymore.  I like playing with Ruffus."

Austin patted my butt and pushed my now super soggy diaper back up.  "He won't say anything.  He's not playing.  He really is a baby.  See his little baby cock?  See how he wets his diapers?  He's a mutt.  That's what mutts do."

Todd's ears suddenly perked up and he looked down at me.  I shook my head, but it was too late, already.  "Yeah!  Ruffus is a mutt!  Daddy says that all the time!  So I can pee on Ruffus?"

"Mmhmm.  Whereever you want."  Austin declared.

"Ummm...I liked what you did but..." Todd lowered his underoos revealing his 5-year-old cock.  He wasn't kidding when he said he was bigger than me.  He was only three or so inches, but it didn't take much to be bigger than me.  "Mutt!  Suck on it like your baba!"

"No!" I thought, but the magic of the collar took over.  I was forced to open up and take his penis into my maw and start to suckle.  He suddenly spasmed as if he wasn't expecting what he felt.  I winced as I felt like I knew what was coming.  And I was right.  Moments later, a stream of urine went down my throat and I was drinking it much like I'd drank the baby bottle earlier.  A tear ran down my cheek as the acrid taste made me want to spit it out, but I couldn't.  

"Good, Todd.  You're learning.  Tell him to keep going.  He'll know what you mean."

"Keep going, mutt!" he ordered.

I whimpered, suckling on his cock as I felt my diaper being lowered once more.  His cock pressed against my tail hole again, but this time, it wasn't urine.  My tailhole gave way to his teenage cock and my abused prostate flared to life.  It had been a week since I'd had any kind of stimulation.  Although unwanted, my caged cock pushed against its constraints.  I was definitely confused.  I knew this was wrong but between the prostate's stimulation and the wet diaper lubing my caged cock, this was the most action I'd seen in a week.

"See, the mutt likes it.  His little tail is wagging," Austin berated, planting a quick spank on my rump.

This was a dream.  It had to be.  This couldn't be happening.  I was being fucked from both ends in a chastity cage.  And my body was so starved for attention that it was liking it.  I couldn't help it.  The collar was forcing me to do this.

Todd was panting above me and his unexperienced bucks were becoming more and more erratic.  After just a few more thrusts he let out a young yowl of pleasure.  The wolf behind me wasn't nearly as inexperienced, it seemed, though.  He'd knotted me and he was still going.  

"Todd.  I want you to see this.  This is where mutts belong.  This is what you do to them."  The young cub was looking, fascinated, as the older wolf suddenly bit down on my neck and sped up, slamming his knot in and out of me.  Magic of the collar or no, my cock was feeling all sorts of strange sensations against the confines of the cage and I moaned out loud more than once, despite my best intentions.  Just as I felt that I might cum if he went on for just a little longer, he hilted all the way down into me and I felt warmth creep into me.  I whined into Todd's crotch, suddenly deprived of the sensation.  

Todd was looking down at me with a look that I'd never seen on him before.  Like I was now one of his toys.  The horrible part was, I didn't care anymore about the names.  About the Ruffus comments.  About the wet diapers.  I just wanted to get off.  Anything to get pounded like that again just so I could finally cum.  

"Don't worry.  I've got more tricks to show you.  We'll have lots of fun with our mutt."