As I stepped out of the house, I couldn't help but feel the warmth of the summer sun beating down on my skin. My mother had just left for work, leaving me alone with my stepsister, Cory. I had half-expected her to be inside the house, but she was nowhere to be seen. I made my way to the backyard, where I was going to wash my car. It was a task that I usually enjoyed, but not this time. I was already feeling anxious and uncomfortable, wondering what Cory had planned.
She emerged from behind the hedge line, wearing a skimpy bikini that barely covered her curvaceous body. She looked younger than usual, with her face flushed red from the heat. I tried to maintain eye contact, but it was torture. Her big tits were jutting out from the top of her bikini, and she swayed them back and forth as she approached me. "Are you having sex with your step-daughter?" she asked innocently enough, her voice betraying her nerves.
I was taken aback by her question. What kind of a thing was that to ask? We were just stepsiblings, after all. "What kind of question is that?" I stammered.
"Well...I heard you guys and you know...I just wanted to know." She looked down at her feet, her hair draped over one shoulder.
I didn't want to lie to her, so I told her the truth. "We're not having sex," I admitted, my voice cracking slightly.
Her big blue eyes widened, and then she grinned. "Oh, well that's too bad. Isn't there something we can do about it?" She crawled on all fours in front of me, her pink bikini bottom riding up her curvaceous ass. She pulled down her top and shook her tits in my face, her nipples standing at attention. Then she crawled over to the side of the car and laid down on it, her legs spread open invitingly.
My cock hardened instantly, and before I could process what was happening, she was pulling me towards her. Our mouths collided in a messy kiss as she reached for my cock through my pants. She stroked it slowly, expertly, before taking it in her mouth and sucking on it like a lollipop. I groaned, losing myself in the feel of her warm, wet mouth around my throbbing dick.
Without warning, she stood up and pulled off her bikini bottom. She turned around and presented her perfect, bubble-shaped ass to me. My heart was racing now, my mind spinning with desire. She spread her legs wide, inviting me inside. I wasted no time, diving into her pussy with my cock. It was wet and warm, and she moaned as I pounded into her from behind. With each thrust, I felt her tightness grip me.
Suddenly, she pulled me to a stop. She had an idea in her head. I watched in amazement as she lay down on the hood of the car, spreading her legs once more. This time, when I entered her, I felt her walls contract around my cock. She was mine. I pulled out and peed all over her pussy and stomach, the hot liquid mixing with her juices as it sprayed onto her skin.
She giggled and wrapped her legs around me. "Again?" she asked playfully. I filled her up again, watching as her eyes rolled back in pleasure this time. Her pussy tightened around my cock, holding me in while she drank every drop of my pee. When I was done, we switched positions. She sat on top of the car, riding my cock in a cowgirl position. Slowly but surely, we moved into doggystyle, her ass cheeks clapping together with each thrust.
Cory's moans grew louder as I reached under her and rubbed her clit. She came with a scream, her warmth washing over me in waves. As the wave subsided, we moved once more, this time into missionary position. Her pussy was soaked, and I couldn't resist peeing into it again. She gasped, taking a deep breath as she felt the sharp sting of my hot pee against her sensitive skin.
We moved slower now, savoring every moment. I could feel myself getting close to cumming again. When I did, I pulled out and jerked my cock off above her open mouth. She opened wide, agape, and swallowed every drop without hesitation. Our eyes locked, and I knew at that moment that we had crossed a line we couldn't uncross.
Cory climbed off, smiling at me mischievously. "You know, I found some shot glasses," she said, reaching behind her. Out came a row of shot glasses, all filled to the brim with golden liquid. "They're yours. I've been saving them for you."
I took a deep breath and swallowed hard, hardening my resolve. I knew what was coming next. But I didn't care. I wanted this. I wanted her. I walked over to her and emptied my cock into each and every one of those shot glasses, watching as she greedily guzzled them down. When she was done, she smiled up at me and licked her lips, her mouth still wet from all our piss play.
And just like that, our secret was out. We stared at each other, neither of us saying a word. But as the sun set over the horizon, I couldn't help but feel a deep sense of satisfaction and desire. We had crossed that line together, and there was no going back.
