Sarah gets dressed and fed.

I remained perfectly compliant on the mat, allowing Lidia to diaper me for the first time as an adult. I stared off into space, ignoring Lidia's taunts and baby talk as she lathered my pussy and ass in barrier cream then puffed much more baby powder on me then was necessary. I was determined to keep my emotions in check and not let things escalate further than the already had. Plus, the smell of the lavender baby powder was somewhat soothing.

As Lidia folded the gigantic, babyish padding over my groin, I ventured a quick peak at my babysitter's face and couldn't help but smirk a little bit in triumph. Despite her continued attempts to demean me by calling me a "good baby" and questioning how long I could keep my diaper clean, the lack of any emotional response by me was clearly getting to her. Lidia wanted a rise out of me and she wasn't getting it. It was a small win, but I'd take it.

Keeping my emotions in check was a sign that I really was an adult. I was not the bedwetting 10-year-old my mom demoted me too. I was certainly not the pants wetting toddler Lidia was planning on treating me like. I was a mature, intelligent adult put into an impossible situation. I could survive this weekend and come out better on the other end.

My success at convincing myself I was an adult was short lived, though. After taping the diaper shut, Lidia pulled me up to a seated position. From there, she stuffed a giant pacifier in my mouth and ordered me to suck it. I did as told, again, trying to prove to Lidia that I wouldn't let her **** get to me.

Lidia then pulled me to my feet and instructed me to lift my arms. Once again, I did as she asked. When I did, she quickly pulled a pastel yellow sun dress over my head and pulled it down my body. I couldn't help but look down at myself. The sundress was definitely designed to look like something a mother would dress her two-year-old in. It was sleeveless with a gingham pattern. A large white ribbon with I gigantic bow was tied around the waist of the dress. A large butterfly was embroidered on the left side of the skirt. But, the style of the dress wasn't the worst part. It was the cut.

The neck of the dress was incredibly conservative, stretching all of the way up to my neck, hiding any potential hints of cleavage that would allow me to believe I was an adult. That wasn't the worst part though. The skirt of the dress was short, almost comically short. It did absolutely nothing to cover the bottom of the diaper I was wearing. The damned padded underwear peaked out from under the dress no matter how I moved.

As I inspected the horrific dress Lidia put me in, I felt her tugging at my hair. I could feel her pulling it into two bunches on either side of my head before she tied a ribbon around each bunch and let go.

As a final touch, when she was done doing my hair, Lidia shoved a giant, yellow pacifier in my mouth to complete the look.

Having dressed and styled me, Lidia stood back to admire her work. She grinned from ear to ear as she looked at me.

"Oh, Sarah, you make a perfect baby! Come look!"

Lidia grabbed my hand and pulled me over to the full length mirror hanging on my closet door. I looked at myself and wanted to cry. The person looking back at me wasn't the mature adult woman I pictured myself as. It wasn't even the 10-year-old girl I had been demoted too. Instead, the person looking back at me was nothing more than an overgrown toddler.

With the dress that did nothing to hide the diaper I was wearing, the pacifier in my mouth, and my hair tied into high pigtails with ribbons, there was no question about what I was supposed to be.

As I stared at myself, my emotion turned to rage. Lidia couldn't do this to me. My face started to turn red in anger. I balled up my fists. I spit out my pacifier. I stomped my feet and screamed.

"No! No! No! You can't do this to me! I am a big girl!" I raged.

Lidia grinned darkly in the mirror.

"Oh, you want to play the naughty baby in our game of house? I can handle that!" Lidia said. With that, she pushed me to the ground. "If you are going to throw a tantrum, make it real. Throw a tantrum on the ground like a real baby," she said, looking down at me.

The sudden push shocked me. I landed directly on my ass. I had to admit, it was convenient that I was wearing a diaper. The extra padding on my rear end made the fall much more surprising than painful. From my position on the floor with my legs splayed in front of me, I stared up at Lidia stunned.

"What are you waiting for? We're playing house. You're the baby. Throw a baby tantrum. Now!" Lidia commanded. "Or, is this a REAL tantrum, and you need another big girl punishment?"

The phrase 'big girl punishment' reminded me once again of the vicious spanking I had just endured. My butt was not ready to handle another beating like that so soon. So, with as little enthusiasm as I thought Lidia would find acceptable, I accepted my babysitter's proffered 'out' for my behavior. I half-heartedly slam my fists on the ground and yell out with a childish lisp.

"Me no baby! Me big girl!"

Lidia puts a finger to her pursed lips and looks down at me with disappointment.

"That's not much of a tantrum, sweetie. Show Mommy how a baby really throws a tantrum!" Lidia says encouragingly.

I don't want to comply. I know how stupid I'll look screaming like an out-of-control toddler on the floor. But, I just can't think of another option. So, like the obedient little girl I was being **** to be, I did as I was told. I through myself to a laying position on the floor. I started to frantically kick my feet and slam my hands into the ground. I let my frustration with my situation flow through me. I started wailing as I flailed.

"Nooooo Baaaaaaaaby!!!! Biiiiig Girrrrrrrl!" I screamed out. My frustration and humiliation bled through more than I expected and ai started to cry. I could hear Lidia giggling above me. Clearly playing her role of 'Mommy' in her twisted game of house, Lidia starts to talk to me.

"Oh, poor baby! Are you having a hard time controlling your little emotions? What's wrong? You can't have a dirty diaper already, I just changed you. You probably aren't gassy. I bet I know the problem! I bet the baby is hungry!" With that, Lidia beant down and, with strength that I didn't know she had, picked me up and placed me on her hip.

I continued to play the part of 'baby,' wrapping my arms and legs around my babysitter to make carrying me easier. The remnants of tears still rolled down my face. But, I was determined to play the roll of baby as best I could to continue to avoid any more corporeal punishment.

Lidia turned and carried me out of my bedroom. Exhausted from the emotional toll the morning had already had on me, I laid my head on Lidia's shoulder as she took us towards the living room. To my surprise, as Lidia walked, I felt a pleasant, tingling sensation start to radiate from my pussy. The rhythmic pressure of my padded crotch against my babysitter's hip as she took each step was uncomfortably arousing. As we continued to move together, I found myself, despite my best efforts to stop it, slightly grinding my groin into Lidia's hip.

I dared a peak up to Lidia's face to see if she noticed. She didn't acknowledge my naughty behavior other than to grin to herself.

To both my relief and disappointment, my ride on Lidia's hip did not last long. When we made it to the living room, I saw Lidia had set up a four foot by four foot playpen in front of the TV and filled it with baby toys. Lidia plopped my diapered form into the playpen as soon as we got there.

"Now, baby, you stay here while Mommy makes you a bottle," Lidia instructed. I complied, although I stuck my tongue out at the idea of drinking from a bottle. Lidia then quickly left the room, leaving me alone with the blocks, dolls and stuffed animals in my playpen.

I tried to make the most of my alone time, looking around the room, inspecting it for any other changes while I was bathing and in time out. I quickly became distracted though. The pleasant tingling from my pussy hadn't gone away. The humiliation of be wrapped up in a diaper and treated like a naughty toddler by Lidia, who, despite being cruel, was undeniably attractive, was giving me feelings.

Giving the room a quick glance to make sure that Lidia was still in the kitchen, I flipped up the front of my skirt, quickly through my hand down the front of my diaper, and started to slowly massage my clit. As I rubbed myself, I couldn't help but lean into the humiliation.

"You're a pathetic little baby! You deserve this! You probably want to just sit around and poop your pampers all day!" I said to myself under my breathe. As I did I continued to thrust my hips into my hand and started to lightly penetrate myself with my fingers.

As I continued to masturbate in my diaper and my pleasure built, I closed my eyes and bit my lip. Finally, with an explosive release, I came. Waves of pleasure racked my body and it took everything I had to keep from yelling from the overwhelming feelings. Despite the humiliation and shame of my situation getting me off, I did not want to let Lidia know what I was doing.

As my orgasm waned, I pulled my hand from my padded pants, laid back on a pile of stuffed animals in my playpen, and slowly opened my eyes. I looked down at my disheveled dress and slightly crooked diaper in shock. While I wasn't certain it would be clear to Lidia what I was doing while she was away, I did not want to get caught. If she knew I had came due to her humiliating treatment of me, her **** would be amped up tenfold. So, as I heard the steps of Lidia walking in from the kitchen, I quickly adjusted the diaper I was wearing and pulled down my dress, hopeful she wouldn't notice a thing.

As Lidia walked around the corner into the room, it seemed I was safe.

"Alright baby! I know that you very hungry, given your little tantrum earlier, so I made you a bottle!" Lidia said as she approached the playpen. As she got to me, she held out a baby bottle, sized up to be big enough to fulfill the nutritional needs of a demoted adult.

Once again, the question of why my mom was so full prepared to demote me passed through my mind. However, I didn't get much time to dwell on that issue before the rubber nipple of the bottle was unceremoniously shoved into my mouth.

"Take you baba and drink your milk for Mommy, Baby Sarah," Lidia said as she encouraged me to take the comically large bottle from her. I both blushed and scowled at her in response. My indignation at the babyish treatment warring with the arousal I suddenly realized I had at being treated this way. I still grabbed the bottle from Lidia and began to drain the suspiciously sweet tasting milk from it.

"Oh, you're so cute when you're grumpy!" Lidia cooed at me as she walked towards the couch. I continued to glare at my babysitter over my bottle as she flipped on the couch and grabbed the TV remote.

"It's been a busy morning. Mommy will put on a show for you while she takes a break, doesn't that sound nice?" Lidia said with the saccharine sweet tone of an adult talking to a toddler.

Lidia clearly wasn't expecting an answer from me, because before I could even nod my head, the TV was on. She changed the channel as I continued to slowly drain the bottle of warm, sweet milk I had been given. When Lidia landed on a channel to watch, I groaned internally again.