Before I returned home, Uncle Keith and I came up with a plan to convince my parents to allow me to move-in with him long term. He rang up my parents with a fake job offer saying his personal trainer company team needed an assistant and that he already put in a good word. At first they were concerned with my college schedule but we planned for this and he told my parents that its only part-time and that he negotiated time for class work. Since I was unemployed at the time, they practically forced me to take the offer and after only two days back home, I moved back in with my Uncle Keith.
Since moving back in, we fell into a pretty standard sex routine. If he had a personal training client he'd fuck me from once he woke up up until he had to get ready. Uncle Keith would leave me his schedule and while he was gone, I'd attend my on-line lectures and do homework. Then I'd clean-out an hour before he got home just in case he needed more which was most days. After three weeks of this, he began to spice things up to my excitement.
It was early Saturday morning when I was woken up to his voice. "Eugene! Come here boy!" I hear him call from the living room.
"Coming!" I reply as I groggily emerge from my sheets. Looking out the window, the sun had not even begun to rise.
I walk down the hall in nothing but a small black jockstrap as I love sleeping in only my underwear and as I enter the living room I begin, "You dinged?"
I see Uncle Keith laying back and manspreading on the couch in nothing but his jockstrap, displaying his already semi hard member. I sit on his lap, positioning his growing cock between my exposed ass cheeks. His hands cup my small bulge and he begins to talk, "Eugene, I know you said that you're willing indulge my kinks so If you're ready I want to start now." I gulp in anticipation as he leans to his side grabbing a small leather bag. Opening it, he reveals something I've only seen in porn. A chastity cage and a tiny one at that. He hands it to me and continues, "You see, I actually prefer fucking guys that wear one and since I first saw you ride my dildo, I noticed that even when I fuck you, you don't touch your cock. I thought it over and chastity might be something you'd enjoy."
My face turns beet red and my mind races with excitement as I look back at how jealous I was of the locked bottoms in the vidoes I watch. "Absolutely Uncle!" I reply. Slowly, his smile fades and as I stand and drop my jockstrap, he begins again, "Eugene, I'll still be your uncle but once I lock the cage, you'll also be my slave. Our dynamic will get darker and nastier, are you sure?" he asked as if confirming my decision. I momentary silence filled the air until it as broken by my voice as I said, "Please lock me Sir."
It was as if he snapped because he quickly helped me put on the cage and locked it before I could regret it. The keys were on a thing gold chain that he wore around his neck and once secured, it began.
Eyeing me up and down he laughs, "You're cock is so small I think you actually need a smaller size!" Again I blush as I look at my locked cock now only a nub, and indeed, while secure, it felt as if a smaller cage was possible. " You're right Sir about my tiny cock." I reply.
His breath gets heavy as I make eye contact and a shiver runs down my spine as I see a look I've seen before. He pushes me on the couch with my back arched and stomach down and quickly I feel his rock hard cock's wet head rest at my hole. As if by instinct, I push back ever so slightly to tease his cock and soon he chuckles, "You're gonna regret that."
In one, almost lethally strong thrust, he plunged his cock's full length into my hole. My legs quiver and the sensation of my cock straining against the cage made my mind go stupid. He kept thrusting his full thick cock in and out while I became a mindless sex toy with every thrust. My locked cock swung back and forth as he plowed my now loosening boy pussy and soon enough I felt his cum flood my guts.
As he came, I realized that unlike before when our climaxes were sycned, this time, the cage kept me pent up. As he exited my cum dripping hole, I look around and see he's still rock hard. "Why did you stop Sir? I' want to cum Sir!" I begged. He smiled a wicked smile before he said, "You cum when I say you can."
My heart sank as the sensual Uncle Keith I knew was replaced by this sadistic master, yet, this feeling of being controlled down to the orgasm made my body burn with lust. "I understand Sir." I said in acceptance.
"Good boy." He said before reentering my gaping boy pussy. At that moment, something clicked and it was me finally understanding the feeling of being a sex slave and loving every moment. An hour passed of that hole destroying pummeling and finally Uncle Keith had dropped his second load. Sweat coated our bodies as he collapsed on top of me with his massive cock still in me. After a quick rest, he removes his cum coated cock and positions it at my face.
"Clean it." He commanded. I suck it immediately and the taste of his cum and my hole on his cock made my mind go blank as I savor the taste. The sun eventually rises and as my uncle leaves to meet his client, I use a butt plug to keep his semen inside me and head back to bed.
Thus marked Day 1 of being locked and used by my uncle which (Spoiler) is still on going to the present and I'm 26 now lol
