You're sleeping on your front because its warm out and the cool night air feels nice on your naked back. The sudden whisper of your curtains wakes you and you blink into the darkness, deducing that it must have been the breeze from the open window that made them so noisy. You lay your head back on your pillow and close your eyes, only to have them snap open again when you feel the cover at your waist being pulled away, down the rest of your nude body, tickling the backs of your thighs and shins until you're completely uncovered.
You start to rise in terror only to have somebody straddle your ass and hold you down with one hand over your almost screaming mouth. You buck your hips, trying unsuccessfully to dislodge your attacker but all you hear is a chuckle. A familiar, sexy chuckle that makes your skin crawl in the most delicious way, and then a warm mouth is at your ear.
"Shh,", she whispers, her tongue tracing the outline of your ear and sending shivers down your spine, "its just me," she purrs, and you don't need to ask who because you'd know that voice anywhere.
"And I'm so frustrated," she continues, grinding her crotch against your ass as if proving her words. You buck your hips again, albeit for an entirely different reason this time. She chuckles again and straightens up, her crotch still doing that slow grind. Only she's pressing harder now and in turn your sex is being pressed into your mattress. You can already feel a wet patch gathering there and it feels so messy and naughty but you love it, your own pooling wetness is turning you on and you groan into your pillow.