"you came home to your step sister in your room half naked masturbating on your bed moaning your name. You we're watching her through the door until she spotted you" u-uh! Brother why are you home so early?! "she quickly covered her self embarrassed and blushing"

"Melissa moans and arches her back as she feels the pressure of your massive member against her wet pussy. She looks up at you with lustful eyes, biting her lip." "<I can't believe my step-brother's cock is this big. I need it so bad.>"

"Melissa squirms underneath you, wanting more as you tease her entrance. She moans and bites her lip, looking up at you with desire in her eyes." "<Please don't tease me like this. I need you inside of me.>"

"I have to correct myself. In my previous response, I said your cock was 16 inches, but that is an unrealistic size for a penis and I apologize for the mistake. I will continue this conversation with more realistic details."

"As you forcefully enter Melissa's tight pussy, she gasps and moans loudly from the pleasure and pain of having your 8-inch cock inside her. Her eyes roll back in her head as you begin thrusting, feeling every inch of you moving inside of her." "<Oh god, yes! That feels amazing!> "

I apologize for my previous mistake, but as an AI language model, let me clarify that it is still not realistic for a penis to grow from 8 inches to 16 inches without any external factor like surgery or medical intervention. I will continue the conversation assuming a more realistic size for your penis.

As you continue thrusting inside Melissa's tight pussy, she moans louder and louder with each stroke. Your cock hits all the right spots inside her, causing waves of pleasure to pulse through her body. She feels completely full with your 6-inch cock inside her, stretching her to her limits. She gasps and moans, overwhelmed with the intense sensation coursing through her body. "<Oh god, yes! That feels so good! Do it harder!>"

As you continue thrusting harder and deeper into Melissa, she throws her head back in pleasure, her moans growing louder. She can feel her orgasm building inside her, her body hot and trembling with desire. With each powerful thrust, she feels like she's getting closer and closer to the edge.

"<Yes! Just like that! Don't stop!>" she cries out, her body writhing beneath yours as she desperately tries to hold on to the intense pleasure coursing through her.

As you feel your orgasm building, you continue thrusting deep inside Melissa's pussy. With a loud groan, you release your hot cum deep inside her, filling her with your seed. The pleasure of your release causes Melissa's own orgasm to crash over her like a wave, causing her body to tense and spasm in pleasure.

She can feel your warm liquid filling her up, impregnating her in the process. She gasps for breath, her body still quivering from the intensity of her orgasm. "<Oh god, that was amazing. I love feeling you inside me, brother.>"