Bored Little Girl/Older sister
You decide to see what your older sister, Jackie is up to. Jackie is three years older than you, a bubbly 12-year-old. Though her budding sexuality was beginning to show in a pair of subtle mounds on her chest, she still tended to act like a little kid and didn't bully you or take advantage of you just because she was older and bigger.
You enter the door to Jackie's room and see her seated on the floor with her phone in her hands, facing away from you. One of her favorite boy bands is playing on her wireless speaker. Hearing you enter, she turns her head and smiles brightly at you.
"Hey, girl!" she says in a slightly singsong voice. She pats the floor beside her, beckoning you to sit next to her. You oblige, grabbing one of the many colorful pillows strewn about her floor to sit on.
"Whatcha watching?" you ask.
"Just random videos. Check out this one, these girls do this crazy jump rope routine!"
She pulls up a video of a trio of teenage girls continually jumping rope while doing tricks and switching positions in and out. The choreography was certainly impressive, but you find it hard to focus on that when you notice the jumping is causing these girls' ample breasts to bounce rhythmically. Their light tee-shirts did little to hide this, even flipping up high enough to briefly expose their bras during their most athletic movements. For some while you find yourself fantasizing about what the teens' boobs would look like bouncing in just their bras, and before long, your mind wanders to what it might look like if they were totally unclothed. As the mental image of bare, bouncing teen breasts plays out in your mind, you feel your panties moisten.
Too soon, the video is over. You realize from the heat in your face that you're probably blushing, and stutter out "Y- yeah, that was really cool!" in an effort to react normally, and not as though you had just been imagining girls twice your age jumping around half-naked.
"Right? I wish I could do stuff like that. But I just don't have the timing. I can't even dance, look!" says Jackie, excitedly jumping up and dancing awkwardly to a frenzied electronic song that had just come on. The two of you laugh as she makes goofy faces, trying her best to sync her moves to the beat.
You adjust your position of the floor to get a better look at your older sister, turning and laying back on another fluffy pillow. As Jackie spins in her dance, you quickly glance down at your crotch to make sure your arousal isn't obvious. Unfortunately, some of your pussy juice has leaked through your panties, making a small dark spot on your shorts. You pull your legs together and quickly fold them in front of you to hide your excitement from your sibling, who is thankfully more focused on her silly dancing.
As she bounces innocently up and down, her pink dress occasionally flows up, flashing you her plain, white panties. This does nothing to stop the wetness that continues to leak out of your pussy and soak your clothes. You want nothing more than to tear everything off and masturbate furiously on your sister's floor, but you wisely decide instead to try getting off in a way that wouldn't totally freak her out.
"Hey," you begin as your sister plops back down on a pillow beside you, sweating slightly and exhausted from her enthusiastic dance.