Streak back to the guest room

You’d been in the lake for a little while, and the sun is making its way down toward the horizon; it isn’t night just yet, but if you waited just a bit longer you’re sure you’d start to see the oranges and pinks of a setting sun. The light is glinting off the cars parked around the lake house, and between the glare and the vehicles’ dark windows it’s all too easy to imagine an audience behind them. Surely everyone would be inside by now, you think. Inside and watching from the windows? How many people were still out in the water? Could people be starting to leave?

“Hey!” Amy says, snapping her fingers in front of your face, “you ready to do this or what?” The two of you are peeking out on either side of the same tree, Amy leaning forward, ready to make a break for it— but not without you, evidently.

“Sorry,” you say after a second, “yeah, I’m good. Let’s... let’s get this over with.” Amy grins, and pats your shoulder.

“It’ll be a cinch,” she assures you, “just follow my lead. On the count of three! One... Two... Three!”

And with that, she takes off, with you stumbling to follow her for those first few steps. Thoughts of watchers in the windows or hidden in the cars briefly disappear as you focus solely on what’s in front of you; the big, brown, bouncing booty of your best friend. With every step Amy sprints her cheeks ripple and clap, only stopping their wild wobbling whenever she takes a moment to duck behind one of the parked cars and glance out for cover. You're only ever a step or two behind, having to almost crouch to match the shorter girl hiding out of sight, and you've stopped covering your cock for a moment. Finding it too hard, and too difficult, to keep concealed while running, pointing straight ahead as it was like a dowsing rod, never not pointing at the current cause for your excitement. As you two run up to hide behind the car closest to the cabin, Rebecca's own red convertible, Amy motions for you to wait a moment.

"Alright," she says, a bit out of breath, "couldn't see anyone through the windows, so we get through the front door and we're home free. Told you this'd be a piece of cake!"

"Right," you say, glancing down at the crouching Amy's backside, as a bit of lake water from her wet hair travels across her back, trailing all the way down her cheek before dripping onto the gravelly ground. "Cake."

"Alright, let's go!" Amy darts towards the house, and you follow behind, grateful for the smooth stone of the steps rather than the cluttered ground of the woods or the loose stone of Rebecca's drive. You almost collide with Amy as she gets a hand on the door but pauses before going through, throwing a hand out to stop you but accidentally placing it right at your pelvis level, fingers brushing your pubes and dangerously close to dropping onto your erection, and you inhale sharply. You grab her wrist to move her hand, and quickly shoot your other hand down to clumsily cover yourself as she glances back at you. She puts a finger up to her lips, and instead of yanking her wrist out of your grip, she clasps yours in turn and grins, before opening the door just a crack and peeking through.

"Alright," she says over her shoulder, "coast is clear. Now!" Amy flings the door wide open and runs through, not bothering to cover herself, but pulling you along, causing you to uncover as well as one arm is yanked forward and you throw the other one out for balance. Amy kicks some partygoer's shoes out of the way as you clear the entryway, pulling you through the thankfully empty living room without so much as a second glance, though looking through the doorway out through the kitchen, you thank god that Candy has her back to you, sticking her head out the sliding glass door to shout for someone, because you can't imagine the trouble you'd be in if she of all people caught you and Amy like this.

As Amy rounds the corner of the hallway, her she lets go of your hand to grab the door to the guest room, you have to hold your hands out in front of you to avoid bowling her over, one landing on her shoulder but the other getting a palmful of her chest. There's no time to dwell on it-- no time to think about the way it squished in your grip, the way her hard nipple poked against your palm, the quick gasp that escaped her lips when it happened-- before you both hear the bathroom door across the hall click unlocked. Your eyes briefly meet Amy's before she swings the door open, pulls you forward and, with both hands on your chest shoves you into the room. You stumble in reverse before falling backwards onto the bed, Amy pulling the door closed and belly-flopping onto the bed herself.

"Hello?"

You both jolt and go stock still, hearing the feminine voice in the hallway, presumably the person in the bathroom a moment ago perplexed by the sound of a slamming door. You both sit there in silence for a moment, before you hear a mutter of 'whatever' and footsteps down the hallway. You and Amy sigh in relief, you tilting your head back to look at the ceiling, and Amy rolling over onto her side to face you. You turn your neck to look at her, but her eyes are pointed back towards the door. No, not the door: down at you. You uncovered cock was standing tall, pointing straight to the ceiling. Your heart skips a beat at the realization, and your cock twitches at the attention. Your eyes slowly scan back up to Amy's face-- moving from her legs parallel to yours, her thick thighs and (with another twitch) you see the thick but even patch of dark hair between them, past her plump stomach, equally plump breasts, all the way back up to her face, where she finally looks back to you. For a moment, the two of you lie there, heavy breathing only partially explained by the run into this room.

"We should, uh," you start, swallowing as your mouth suddenly goes dry, "we should probably get dressed."

"Yeah," Amy says simply, "Maybe."

Neither of you move.