The air crackled with unspoken tension. My stepsister, Alicia, sauntered into my room, seemingly oblivious to the way my eyes devoured her. She was wearing one of my old t-shirts, and the way it clung to her bouncing boobs was driving me insane.
"Hey," she said, feigning casualness. "Need any help with your homework?" Her voice was a soft purr that sent shivers down my spine. I knew she was playing with me, and God, I was loving it.
"Actually..." I began, my voice husky. "I could use a hand..." My eyes locked onto her perfect natural tits straining against the cotton. She followed my gaze, a knowing smile spreading across her lips.
Without a word, she stepped closer, her hand reaching out to cup one of her breasts. "These?" she whispered. "You like these?" I could only nod, completely mesmerized. The pink areola peeked through the thin fabric, begging to be touched.
Slowly, she lifted the t-shirt, revealing her big natural tits in all their glory. They were even more magnificent than I had imagined – full, round, and perfectly shaped. "Think you can handle these?" she challenged, her eyes filled with playful lust.
I surged forward, my hands eager to claim what I had been fantasizing about for so long. I massaged her pink tits, savoring the weight and softness in my palms. Her nipples hardened instantly, throbbing with anticipation. I brought my mouth to one, sucking and teasing until she moaned, a sound that vibrated through my body.
She guided my hand down, her fingers interlacing with mine as I began to stroke her gently. Her breath hitched, her body trembling with each tantalizing movement. The busty handjob was building to a crescendo.
"More..." she gasped, urging me to increase the pressure. "Faster..." I obeyed, my focus solely on pleasuring her. The tension built and built until she cried out, her body arching as she reached her peak. Titty drops became prominent, with each spasm. The cowgirl riding position was about to become an option.
As she relaxed, her eyes fluttered open, a dazed expression on her face. I knew what she wanted. I positioned myself, and she took me in hand again, this time with intent.
The cum on tits was thick and hot, a testament to our forbidden desire. Alicia reveled in the moment, savoring the illicit thrill of our secret encounter. In that moment, we were lost in our own world, consumed by the pleasure we had found in each other. Alicia, the babysitter (18+) had fully transformed.