Part 1
My tongue pressed against my teeth when I saw the power vibe in my Master's hand.
He had taken me to a nice wooded park for our morning training. I sat obediently while he pushed my pants to my ankles and opened my shirt to reveal my full and slightly bruised breasts.
He knew why I was frowning. The day before he had kept me in constant arousal with the vibe- 24 hours of constant stimulation and cumming. We had fucked three times and he gave me my first ass training. He used a plug that he admitted was huge for a first timer.
He allowed me to share my feelings at will throughout the day. At first, I cried and begged for permission to cum. I screamed in agony as my ass took its first real lesson. Then, I sobbed while I begged him to stop the overstimulation.
Now my ab and leg muscles are sore, my lower back feels cramped, my belly is tender, and my pussy and ass hurt from over use.
So, when he pulled out the vibe I frowned in distaste. He thumbed my bald, swollen, sore pussy. I winced. He placed the vibe against it.
I knew today I was not allowed to dispute my training. My lips sealed, locking in my dread. He tightened it down hard against me then sparked it to life. I tensed, disobediently grunting as the current flowed deep into my core.
I tried to correct my behavior by relaxing against the vibe. My lips tightened into a thin line and my breaths were slow, long, and deep. I tipped my chin up like Master likes to see.
It was so intense. My ass and abs began clenching as my pussy became wet. I had to try hard not to buck my hips against my stimulation.
"You're hungry arent you?"
"Yes, Master"
"I can tell. Your pussy is already dripping."
I whimpered. He smiled and held his fingers against the vibe, intensifying my experience. My legs trembled in response. My breathing was getting shallow and ragged. I felt so horny. Master watched the vibe ravage me for a short time. I felt the strong current in my pussy. It traveled into my ass and up into my lower back. It was hard to function.
"You're ass keeps clenching. Can you make it stop?"
I concentrated hard and raised my knees so my weight rested on my toes to try and stop. But then it automatically happened again. I wanted to cum.
I asked for permission. He took moments to consider my requests. I asked again,more desperately, before he could answer.
He powered the vibe off. I whined. My body was so on edge. I wanted to come but it was a relief to have it stop.
"I will remind you that talking out of turn earns you punishment. Get on your knees on the floorboards and tip your ass up. Thats it, elbows on the seat. I want you to look at me. Do not look away."
He caressed my bare ass and ran his finger around my swollen pucker. I tensed.
"Your ass is much to empty for you to cum. I want you to feel full when you ask for my permission. You will now wear a reminder that you may not talk out of turn. Now, its time for your Daddy satisfy your hungry ass."
He showed me the plug from the day before. Fear coursed through me. I had never felt pain like that, when he forced it inside of me. The feeling of my asshole stretched past its limits each time a bulb was at its thickest was too much to bear! I was so scared.
"Master! No! Please! It still hurts from yesterday! Please don't make me!"
He caressed my ass, spreading lube all over me. His slick finger slipped into me.
"Your task is to take your training obediently today. Must I discipline you more?"
"No sir... It's just its so big and I'm still sore! Please, can we do something else? I promise to be good!"
He fingered my tense asshole easily now.
"I dont like your attitude. You will keep your knees in the precise spot they're in now. Do not turn your face from me. Now, we will begin."
He pressured the the plugs tip against my anal star. I exhaled forcefully as it broke my seal.
I was in agony as he spaded me with the first bulb. I bit my lip and let the tears fall but nothing more than a small noise and a small break in my posture escaped from me.
I gritted my teeth as the second bulb stretched me painfully. I willed myself not to move away from the misery. I breathed hard and shut my eyes, praying it would be over quickly.
"Open your eyes, slut. Keep them on me like I told you. I will not take nearly as much time with you as I did yesterday. Your body must become accustom to use at my will."
"Yes sir."
I gulped in air as Master watched the second bulb disappear. My eyes were hazy while I stared up at his smiling face. My muscles cramped unhappily.
My face contorted and I jerked out of position as he advanced the next bulb entirely inside me in one motion. The stinging and fullness was so intense I thought I might pass out!
"Master! Oh, get it out! You have to get it out! It doesnt fit!"
I screeched out and jolted upright when he immediately advanced me onto the next bulb.
He slapped my face a number of times and pushed me against the seat. The bulb slid backwards and gave me a moment of partial relief.
He angrily got out and tied me tightly to the seat so I couldn't sit up. I apologized in a panic.
"Please dont hurt me, Master. Im sorry. Im so sorry!"
He yanked my hair so my face looked up at him. Beyond him in the lot were two young guys smoking some pot in their car. I knew they could see me. Master had the door wide open. He saw where I was staring. He looked back and smiled sadistically.
"Don't take yours eyes off of them until the base hits your anus. Let them watch what a little whore you are for me."
I cried and nodded. I took a deep breath as I felt the burning in my asshole intensify. I grunted and wiggled beneath my Master as the young men watched with wide eyes. It was so humiliating.
The fourth ball got stuck and I was bawling. One of the onlookers got out of the car and lingered at his door.
"Do you need some help?" he called out.
Master told me to answer. He pounded the plug as I tried to call out "no". It came out as a shrill screech as I thrashed reactively.
I didn't want the guy to come over.
"No. I like what hes doing," my voice was forced, as I lied through a sob. The guy looked unsure.
The bulb sunk and my body convulsed around it. I saw the young man start toward me.
"Please, I'm almost done. I'm trying to be a good girl. Please, just let me finish."
He retreated to his car but continued to watch.
Part 2
"Oh god I can't keep it inside. Im cramping!" I breathed heavily. "Its so big! Master, help me! Please, get it out...make it stop!"
He sparked my vibe and the vibrations of my pussy helped me take the first half of the last ball. My asshole refused to swallow the rest of it, so Master worked it out, then back in. It was horrible. I clenched my eyes shut.
"Maaaaster!" I yelped out. He slammed it home. I couldnt function. I shuddered uncontrollably. Master held his fingers against the base of my plug and over my vibe. He let me buck. My breathing was ragged. I was full with plug, and burning fire, and I needed to cum. My senses were overloaded.
"Your friends are still watching. I want you to get off for them."
"Yes Master," I answered with a shaky reply.
"Does the plug make you feel full, little whore?"
"Yes Master."
"Your shaking, slut."
"Yes Master. It hurts. It hurts to be this full!"
"Do you want to cum?"
I was crying for my Master, trying to hold my cum, trying to survive the agony of being plugged with something too big, and completely aware that I was on public display.
"Yes Master."
He pressed the vibe and I groaned. I was loosing control. I felt wetness start to drip down my pussy and thighs.
"You may cum now."
I tilted my chin up and ground into his fingers. My breaths came in whooshes. Whiney noises trilled from within me. Wave after wave crashed over me.
The vibe continued to stimulate me as I tried to calm myself after such a huge orgasm. Master was pleased. He turned the vibe down a notch and told me what a good girl I had been. I hated being trained this way and I needed his praise.
"Now, we still have the problem of your friends."
Master untied me, stripped the pants from my ankles, and discarded my already pushed open shirt. I was nude.
"Go over and thank them for watching."
"Like this? Master, no! What if they call the police?"
"You will do as your told, slut, or I could find a punishment fitting for your argument? Would you prefer punishment?"
"No, Master."
He told me what he wanted me to say. He helped me from the car, which was excruciating. Master held my plug as I braced myself against the car trying to adjust to my spading without collapsing.
"Good girl. Good girl," he cooed as I awkwardly stood on my own.
Humiliated, I walked toward the car. The full, burning sensation consumed me. I had to force myself to walk.
They were just finishing their joint. They looked like they were just out of high school. The driver rolled down his window and their eyes were hot upon me. The driver stared at my bare breasts and then his eyes travelled to my pussy. I knew they must be able to hear the vibe. It was so embarrassing.
"Thank you for watching me. I hope you liked it."
They shook their heads.
"You just let him tie you down like that?" the driver asked.
"I disobeyed him. It helped me not to fight," I explained meekly, my eyes darting away from his in shame.
My insides were painfully cramping.
"Do you like to wear that?"
He was referring to my buttplug. He was trying to see it, so I turned, letting his eyes rest on my ass.