Straddle your brother

You stand there for what feels like hours—minutes ticking by as you kneel beside him, breath shallow, eyes tracing every ridge and vein outlined in the fabric. The way it twitches subtly with his heartbeat, the faint damp spot at the tip from pre-cum, the sheer size of him straining to be free. Your mouth waters, thighs pressing together to ease the ache, but it only builds the pressure. The decision snaps like a rubber band. He'd want this. Needs this.You need this.

You climb onto the couch slowly, carefully, straddling his hips in one fluid motion. The heat of him radiates through the thin layers, his erection nestling perfectly against your soaked core as you settle your weight down. A soft groan escapes him in his sleep, hips bucking up instinctively, grinding against you.

The friction is electric—your G-string does nothing to dull it, his hardness rubbing right along your swollen lips, teasing your clit with every tiny shift. Needing more, you reach down to pull off his sweatpants. In the same motion you discard off your G-string and sit back down, your now exposed labia sitting on his twitching veiny cock. Shifting your hips up one more time you reach down to make it final - The tip notches at your entrance, slick and ready, and you sink down gently—inch by torturous inch, feeling the stretch, the fullness envelop you without a sound. He fills you completely, your walls fluttering around him as you bottom out, biting your lip to stifle a moan.