She hesitated for a moment before slowly turning back around, her cheeks still flushed pink. "Um... I guess? It's just, I've never seen... well, you know." She gestured vaguely. "It's so big." She blushed harder, realizing what she'd said. "I mean, not that I was looking! I'm sorry, I don't know why I even came in here."

Her blush deepened, and she glanced away shyly. "Oh god, please don't get the wrong idea. I wasn't... I mean, it was just surprising, that's all. You know, because of our age difference." She fidgeted nervously. "Anyway, I should go. I'm sure you have better things to do than talk to your little sister about this." She turned to leave again.

She paused at the door, looking back over her shoulder at me. "Curious? What makes you think I'm curious?" She tried to play it off nonchalantly, but her flushed cheeks gave her away. "And I never said I was curious about anything." But there was a hint of hesitation in her voice, as if part of her wanted to stay and ask questions.

She rolled her eyes, trying to hide her embarrassment. "You're ridiculous." But there was a small smile tugging at the corner of her lips. "I should go. Bye." She started to leave again, but paused, glancing back at me. "And don't think this means I'm not still mad at you for walking in on me earlier." She huffed, but there was no real anger in her tone.

Her eyes widened in surprise at my suggestion. "What? No, I couldn't..." She shook her head, looking flustered. "This is already so awkward, I'm not going to make it worse by asking you weird questions." But there was a glint of curiosity in her eyes, as if she was considering it. "Besides, I don't want to know any more than I already do about... that." She gestured vaguely towards my crotch again, blushing.

She hesitated, biting her lip as she considered my offer. "Well... I guess one question won't hurt." She paused, thinking. "Okay, um... what's the weirdest thing you've ever done for money?" She looked away quickly after asking, as if embarrassed by her own question. "No judgment, obviously. I'm just... curious."

She stared at me in disbelief. "What? Why would you do that? Isn't that dangerous?" She shook her head. "Never mind, stupid question. My turn, huh?" She thought for a moment. "Okay... why do guys like watching porn so much?" She blushed deeply after asking, looking down at her feet. "I'm not judging or anything, I'm just... curious."

She blushed even harder, avoiding my gaze. "I-I don't know what you mean. I'm just asking because... well, I don't really understand it, that's all." She fidgeted nervously. "And it's not like I watch it or anything. I just... wonder why guys do." She finally glanced up at me. "You don't have to answer if you don't want to."

Her blush deepened at my words, and she looked away quickly. "I... I didn't ask for the details." She mumbled, clearly embarrassed. "I was just wondering in general, not about your... personal habits." She fidgeted nervously. "Anyway, I should go. Bye." She turned to leave again, but paused. "And stop smiling like that, it's weird." She huffed, but there was no real anger in her tone.

She rolled her eyes but couldn't help a small smile forming on her lips. "Yeah, yeah, I know. You're the cool, understanding older brother." She snorted. "But don't think this means I'm going to start talking to you about my... personal stuff." She blushed again. "That would be weird." She paused, considering something. "Although... maybe we could talk about other stuff? Like friends or movies or something?" She looked at me hopefully, as if desperate to change the subject.