Hey stupid brother, what are you doing here... This!!! That my panties.

Really? You'd do that? Fine, I guess I could share them with you. But just this once, okay?

Mmmm, okay. Just make sure you don't mess them up, because I really like them too.

I take my brother's cock in hand and stroke it with the silky material of the panties, feeling them slide over his flesh as I move him closer to release. "Do you want me to make you cum?" I ask breathily, knowing he can't resist the sexy feel of the fabric against him.

My heart races as I continue to stroke his cock through the soft material of my panties, wondering if he's even listening to me at all. The feeling of him growing harder beneath my touch is enough to make my own body respond in kind.

I know it's wrong, and that I shouldn't be doing this... but for some reason I can't help myself. Maybe it's the thrill of knowing we're related, or maybe it's just the pure lust coursing through me. "Because you feel so good," I manage to say between kisses down his stomach.

Stacey hesitates, then bites her lip as she bends over, exposing herself to him. She parts her ass cheeks, revealing the soft, smooth skin beneath, anticipating the feeling of his cock against it. Her breath comes faster now, and she moans quietly at the thought of being taken roughly from behind.

A sharp cry of pleasure escapes her lips as he violates her ass with his cock, stretching and filling her in one hard thrust. She presses back against him, wanting more, moaning loudly as she feels herself being claimed by him. Her fingers dig into the sheets beneath her, desperate for purchase as she tries to hold on through waves of ecstasy coursing through her body.

The feel of his cock pounding deep inside her ass is indescribable; it's dirty and wrong but so unbelievably right. Her hips begin to move with his thrusts, encouraging him deeper still as she feels the spark of release building within her. "Oh god yes..." she whispers breathlessly.

Her voice raspy with pleasure and desire, she moans his name as he takes her roughly from behind. The feel of him deep inside her ass is incredible; dirty but so good. "Mark..." she breathes into the phone, not caring who's on the other line or what they hear. All that matters is this moment, this connection with her brother and the man she loves. Her nails scrape down his back as he thrusts harder, closer to release.

My voice grows hoarse as I moan his name louder, desperate for him to feel the weight of my desire. With each thrust, he pushes deeper inside me, claiming every part of me until there's nothing left but raw need and want coursing through my veins. My body tenses in anticipation of release, and I can't hold back any longer. "Oh god Mark," I cry out, coming hard around him.

His thrusts grow faster and more urgent as he follows me over the edge, filling me with his hot seed until he collapses against my sweat-soaked back, spent. For a moment we're locked together, panting and trembling from the incredible high we've shared. "Fuck," he whispers hoarsely into my ear, "That was..." He hesitates, searching for the right word.

"Insatiable?"

As he lies on top of me, still hard inside my ass, I can't help but laugh a little at his choice of words. "Yeah," I manage to croak out between gasps for air, "That's one way to put it." Taking a deep breath, I lower the phone from my ear and whisper into it, "Mark... you wouldn't believe what my brother just did to me..."

My words are heavy with meaning and desire as I tell Mark about the things my brother just did to me. "He fucked me so hard," I breathe, "I never thought anyone could make me feel like that." My hips twitch involuntarily against my brother's, wanting him deeper still. "And he was rough...oh god, Mark..."

The feeling of his words, of him hearing about it from me instead of seeing for himself, only serves to fuel the fire inside both of us. I can feel myself growing wet again just thinking about how he must be reacting right now. It's intoxicating, this power I have over them both.

As I listen to Mark's frustrated gasps on the other end of the line, I know he's struggling not to lose it completely. He tries to tell me that we should stop, but it comes out as a hoarse growl mixed with begging and pleading. "Oh god Stacey," he whispers desperately, "Please tell him to make you cum again." The need in his voice is so intense it almost brings me over the edge all over again.

I smile into the phone before whispering back, "Maybe if you were here instead of listening...?"

My eyes widen in surprise as I hear the unmistakable tone of desire and lust in Mark's voice. He really does want this, wants us both. It gives me a surge of power, knowing that even though we're related to his boyfriend, he still craves us.

I push my ass back against my brother harder, feeling the familiar shape of him filling me up. "He likes it," I manage to pant out through gritted teeth, "he likes hearing about it...just like you." My hand moves lower on his body, tracing circles around his engorged member, taunting him with how wet and ready I am for more.

It's almost too easy to torture Mark like this, but the feel of my brother inside me is addictive and I can't seem to help myself. "He listens to us while we talk about you," I whisper into the phone, teasing him mercilessly. "And he watches... he loves seeing how much bigger your cock is than his." Mark groans desperately on the other end of the line as my words send a shudder through him.

His moans grow louder as I continue to taunt him with the knowledge that my brother is fucking me better than he ever could. It's such a thrill, knowing I have this power over them both and they can't do anything about it. Mark begs for more, wanting to hear every detail of our forbidden encounter, as if reliving it through my words will bring him some sort of satisfaction.

I close my eyes, imagining the image my words paint as I tell Mark that my brother wants to fuck his mother and me at the same time. The image is so vile, so incestuous... yet it also fills me with a strange sort of excitement. It's like we're all connected in this twisted web of desire and lust.

"He can't believe it either," I whisper into the phone, the truth hidden beneath my words. "It turns him on too." My voice trails off as another wave of pleasure washes over me, caused by my brother's rough thrusts inside me.

With each rough thrust my brother gives me, my words become more twisted and depraved. "He wants to see it," I whisper into the phone, feeling dizzy with lust as my brother's cock hits a particularly sweet spot inside me. "Wants to watch us all together...with his mom." My hips arch off the bed, seeking more of him as I say it.

Mom? He asks skeptically. Yeah, mom's not into it as much. I just want you and my dad, okay? It's not about her. I can feel myself starting to come undone beneath him again, needing his release just as badly as he needs mine. The forbidden thrill of having my brother inside me while I tease my boyfriend on the phone is more than enough to drive me over the edge.