I woke up, rolled out of bed, and automatically dragged my feet down the hallway to my little brother's room. Before I'd even reached Tristan's door thoughts of his huge cock were dominating my mind and warming my insides. Our parents had already left for work so there was no need for caution.
I pushed open his door and saw him snoozing on his back, his duvet draped over him. His defined chest was uncovered and my eyes roamed over his athletic physique, pausing on his bulging biceps. I didn't know what he'd done to me, how he'd twisted my mind and got me to look at him like this, but I did know there was no going back now. My brother was hot and I wanted him.
I peeled back the duvet and marveled at the magnificent cock that flopped over his thigh. I hated that the best cock I'd ever seen belonged to my little brother. I hated how perverted our relationship had become. And yet I loved it too. Climbing between his muscular legs, I ran my tongue over his limp dick from tip to base.
"Wakey wakey, sleepy-head," I whispered. His cock stirred and my tongue darted out again to explore his warm flesh. Tentatively, I wrapped my fingers around his hardening shaft and massaged slowly.
"Mmm," he moaned as he came to life in my hand. My lips parted as his fat cock slid into my mouth. I opened wide to accommodate his serpentine meat.
I didn't care that it was wrong anymore. How we got here in the first place was irrelevant now. The only things that mattered were my lips closing around his smooth head and feeling it push against the back of my mouth. His hand rested gently on the back of my head and I let him guide me into a nice slow bobbing rhythm. He opened his eyes and looked into mine as my tongue darted about his girth while my lips and cheeks slurped and sucked at his hot flesh.
"Good girl, sis," he whispered, encouraging me to continue sucking on his huge dick. "Pick me up after school tonight, I want to take you shopping."
My brow furrowed and I pulled my mouth off his cock for long enough to reply. "What for?"
"I'm gonna get you a new outfit. Something sexy to wear," he said.
I squeezed his balls as I sucked his cock, unsure how I felt about him buying me a new outfit. Last time he'd bought me a bikini that was about 3 sizes too small. It had barely covered my nipples and popped off at the water park. As thrilling as that scenario had ended up being, I did not want to do it again.
I was about to ask him what he had in mind when he suddenly grabbed my head with both hands and started vigorously fucking my mouth.
"Oomph," I managed to mumble with his fat dick in my mouth. I glanced up at his face and saw sweat trickling down his face. He grinned evilly as he continued to brutally stuff my face. His cock invaded my throat and I gagged.
I felt his manhood swell in my mouth and his body stiffen as hot spunk began to erupt from his throbbing cock. His meaty eruption hit the back of my throat and started oozing out of my mouth, running down my chin, all over my hands, and all over his thighs. He continued to fuck my mouth until the last spurt had drained out. He released me after a few moments, his dick dripping with my spit, our family seed. I was gasping for air. His gooey dick stabbed me in the cheek while I tried desperately to catch my breath.
He rolled out of bed chuckling. "Pick me up after school and try not to crash the car," he said as he sauntered off to shower.
I had the day to myself so I got coffee and caught up with a friend. Then I got lunch and gossiped with other friends. By the time 3 pm rolled around, my mind was changing about shopping for a new outfit. Instead of dreading what Tristan might have in store for me, I was anticipating it.
I met Tristan outside the school gates. He slipped into the car and flung his bag in the back seat. "Oh, look, you managed to get Mom's car here without crashing it," he quipped.
"Very funny," he mumbled, starting the engine and driving toward the mall.
"You're dressed a bit Plane Jane, big sis," he said, giving my outfit a disinterested once over.
I was dressed in jeans and a sweater, nothing fancy. "I'm just wearing ordinary clothes," I said, a touch defensively.
Tristan snorted. "For now."
The mall was busier than I'd anticipated and I really hoped that Tristan only wanted to get me a new outfit and that he didn't have any of his antics in mind. The last thing I wanted was to have to find my way back to the car with no clothes on. I made a mental note not to take my eyes off my clothes the entire time we were here.
Everything seemed innocent enough at first. We looked through a few shops but Tristan couldn't find anything he liked. Then his eyes fell on Victoria's Secret and my stomach dropped. I knew he'd find something I wasn't too keen on in there.
"Now we're cooking," he said, grabbing my hand and dragging me into the store.
He started off looking at loungewear. Baggy pants and hoodies. Garments that I wouldn't be embarrassed to wear in public. Then he moved toward the more risque items. He picked up several corsets and bodices before abandoning them all and settling on a skimpy pair of hot pants and a crop top.
"Let's go try them on," he said.
I stared at the items with suspicion. They seemed awfully tame in comparison to the tiny bikini he'd made me wear. I should have been relieved but instead, I just felt on edge. If he was letting me wear something that wasn't too slutty then he had something else planned and he just knew that I wouldn't like it.
He pulled the curtain back and I stepped into the changing room. I was not at all surprised when he followed me in and closed the curtain behind us. I pulled off my sweater and dropped it on the bench. Tristan smirked as he stared at my bra-covered breasts. He was such a horny teenager. The way he was looking at me made him look much younger than the 18-year-old that he was.
"No, no, no, Erin," Tristan said, shaking his head as I pulled down my jeans. "What are those?" He was pointing at my simple cotton panties with a look of disgust.
"They're my comfy panties," I said. I should have known that he would want me in sexy panties, but when I'd got dressed this morning I'd done so with comfort in mind.
"I'll go and get you something more suitable," he said, before slipping through the curtain.
He returned a moment later with a crimson thong which he dropped on the bench with the other items he'd selected for me. "Put that on and don't let me catch you wearing something so frumpy again."
"Frumpy? What does that mean?" I asked. It sounded like something an old person would say.
