Hot Summer Job/Tell her about your own struggles with your little sister.
“Actually... my sister has been giving me a hard time lately.”
“Oh?” Carrie’s expression goes blank, not expecting that kind of reaction to her advances.
“Yeah, she’s been doing these dares with her friends. Two days in a row she’s worn dresses to school without any panties.”
Another change in Carrie's demeanor signals her interest. "Really? Did she tell you this?"
"Yeah, but that's not exactly how I found out."
Carrie wiggles into the bed. "Well, well, do tell."
"Okay. So it was just yesterday. I'd showered, came downstairs, and found her back from school. She tried to get me naked-"
"Really!"
"-and so I grabbed her and picked her up. But her dress was so short and my hands... well, I found out pretty quick."
Carrie allows for a pause, but no more. "Was that it? She just explained her dare?"
"More or less. Although... then she also dared me to get naked."
She half chuckles at that, idly playing with your cock. "The little brat! You didn't, did you?"
You stare down at her hand. You're getting very hard again. "No... err, I mean, yeah. I guess I did."
She tisks at you, shaking her head. "Naughty boy! Showing yourself to your sister."
"No, I was still holding her, so she couldn't see."
"You were completely naked, holding your pantie-less little sister in the air?" she asks, her fingers pulling back your foreskin. "Was she excited? Were her legs wrapped around you?"
"Uh, yeah. I suppose she was kinda... rubbing against me."
Carrie whimpers a little, not quite a moan. "You... put a stop to it of course."
"Oh, yeah. Of course," you say a bit too emphatically, which only suggests the opposite.
"But that wasn't the end of it," states Carrie.
"No. I also 'caught' her changing in the hall this morning. I think so she could show me she was doing the dare again."
"What a tease," Carrie notes, pumping your cock more blatantly. "You poor thing. Does she bother you? Does thinking about her like this make you hard?"
Carrie isn't looking for an answer. She leans into you, kissing you hungrily. The thick smell of your cum overtakes your senses. You can taste yourself on her luscious lips, the sweet and salty cream passing from her mouth to yours. Carrie postures up slightly, her pigtails lightly brushing the sides of your face as she forces herself down on you. She continues to pump you speedily, her own excitement clearly apparent.
She breaks away from you in dramatic fashion. She gives you a big dirty smile before running her tongue around the outside of her mouth, looking for more of the cum you just smeared between the two of you.
If this is Carrie's typical sexual appetite, it's no surprise that her girls are the way they are. Kylie sounds like a fledgling nymphomaniac. You wonder if Larissa is going to become more and more like her sister as she gets older, or if she might retain more of her innocence. You picture little Rissa sitting across from you playing pokemon, the shoulder straps of her dress falling away...
"What are you thinking?" Carrie asks coyly, staring down into your contemplative eyes.