The sister's bedroom was a flurry of activity as she put the finishing touches on her outfit for the night. She glanced over at her stepbrother, who was lounging on her bed, seemingly oblivious to the world around him.
"Hey, dummy," she said, smirking. "You might want to check your zipper before you leave the house."
He looked down and grimaced as he realized she was right. "Thanks, sis," he muttered, quickly zipping it up.
She couldn't resist taking a sneaky photo of his exposed lower half and sending it to her friends with a mischievous grin. "Guess who's joining us for strip poker tonight?" she wrote.
He looked at her in confusion. "Strip poker? You didn't tell me about that."
She shrugged. "I figured you'd be more likely to join in if it was a surprise. Come on, it'll be fun. And if you're lucky, you might even get to see something you like."
He hesitated, but she could tell he was curious. "Fine," he said finally. "But only if you promise to go easy on me."
She laughed. "No promises, stepbro."
The girls arrived at the house a few hours later, giggling and chattering excitedly. The sister watched with amusement as they lost their clothes one by one, each of them trying to outdo the others in terms of seductiveness.
The stepbrother couldn't help but stare at the view, his sister's amazing tits on display. She caught him and playfully insulted him. "Like what you see, big bro?" she asked, grinning.
He blushed, but didn't look away. "You're not so bad yourself, sis."
She raised an eyebrow. "Oh really? Well, if you're feeling brave, I have a proposition for you. If you show your dick to all of us, you can grab whatever you want."
He hesitated, but the sister's friends encouraged him to take the offer. "Come on, stepbro," they said. "It's just a game. What's the worst that could happen?"
He finally gave in and the room erupted in laughter and excitement. The sister watched with a mix of amusement and pride as her stepbrother took control of the situation.
The night continued with more drinks, laughs, and flirtatious banter. The sister couldn't help but feel a twinge of attraction towards her stepbrother, but pushed it aside as just a silly crush.
The stepbrother and sister shared a moment of understanding and connection, realizing that they had more in common than they thought.
The night ended with the sister and her stepbrother in a comfortable silence, both realizing that this was the start of something new and exciting.
The sister couldn't wait for the next strip poker night and the possibilities it may bring.
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