Jane and John were sitting on their worn-out couch in their shared apartment, sipping on their cold beers and chatting about their latest love escapades. Jane, the older of the two, was always the one to give her younger brother advice on his dating life.
"I still can't believe none of your ex-girlfriends have had full sex with you," Jane said, chuckling.
John shrugged his shoulders, "I guess they just weren't that into me."
Jane raised an eyebrow, "Or maybe it's because you have a small dick, and none of them could feel it."
John's eyes widened, "Is that a bet?"
Jane smirked, "You're on."
Before Jane could even react, John stood up and took off his shirt, pants, and boxers, revealing his rock-hard abs and a rather sizable bulge in his boxers. Jane couldn't help but stare, surprised by her brother's size.
"Well, are you going to back down now?" John asked, a smug look on his face.
Jane stood up and took off her shirt, pants, panties, and bra, surprising even herself. She was never one to back down from a challenge, and this was no exception.
"Fine, let's do this," Jane said, getting on John's lap in the missionary position.
She put his dick into her pussy, surprised by how deep it felt like he was going inside her. She had only ever slept with a few guys before, but none of them had ever felt this good.
John grabbed her hips and started thrusting into her, surprising Jane even more. She had expected him to be hesitant, but instead, he was confident and in control.
"Are you really fucking me because you've never had sex before?" Jane asked, trying to catch her breath.
John chuckled, "Yes, I am. And you're the one that didn't put a condom on me."
Jane jokingly replied, "Well, you're right. I guess you can cum inside me if you can."
John's thrusting sped up, and Jane could feel herself getting closer and closer to the edge. She had never felt this horny and wet before, and she couldn't believe that her own brother was the one making her feel this way.
As they both reached their climax, Jane couldn't help but think that this was the start of something new and exciting between them. She had never felt this connected to someone before, and she couldn't wait to see where this bet would take them.
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