Master Cock Whore

"You ready baby?" She asks.

"YES!"

Slowwwwly Fiona pulls her cock out your straining asshole, the feel of her skin tugging along your taut anus was exquisite agony. She had been right. You weren't tearing or splitting. It ached, it felt like you were stretched to the absolute limit, but there were no sharp stings of real injury. Despite her size you now realized that you could take her...you could take her even without lube. You were indeed born for this. The sensation on the inside is insane. It felt like she was ripping your guts out as she receded, but in the most delightful way.

"...eeeee..." You squeak, and then as she pushes back into you. "GUNGHHHH! Fuuuuck!" You feel your dick spurt out another little squirt of cum as your sister fills you up with her cock once more. "Oh my gawwwd!"

"Ohhh shit baby, I can't tell you how good you feel. A girl could get hooked on this shit."

Out she goes again, this time pulling back about halfway. She pauses, then presses in again a bit faster than before.

"GNGHHHHH!" You groan. The pain got less on every stroke, and the pleasure got more.

Out slowly, in again. Out slowly, in again. That feeling of being stuffed to absolute maximum was a bliss beyond anything and it was only getting better and better.

Out, this time almost all the way. "...nooo..." You whimper in fear of her pulling out before she SLAMS back into you with a teeth rattling thrust. "GAAAHHHH!!! GAUNGHHHHHH!!! FUCK!!!"

Your body convulses as your boy pussy cums with the power of a tidal wave. Under you your softening dick blasts another creamy wad as you double climax from the sheer overwhelming fullness you were feeling. For a split second you see white and damn near pass out again, but you hold onto consciousness with all you had wanting to feel every blessed moment of this orgasm.

"GAWWWDDD!" You cry.

"Ohhh Master, again so soon?" She says happily. "Not passing out this time though. That's good."

"OHHH MYYY GOD! I LOVE YOUUUU!"

"You cum like a slut Master."

"YESSSSS!"

Fiona leans down over you and plants her hands into your shoulders, forcing your face down into the mattress roughly, and without even waiting for your release to fully ebb she then gets to work. Throwing her weight behind it she rams her cock deep and hard. Slap! Flesh meets flesh as she goes balls deep.

"HOLY FUCK!"

"He he he" She starts fucking you proper now, a hard steady rhythm of ass pounding pleasure. Slap! Slap! Slap! "Look at you brother!" Slap! Slap! Slap! "Taking that big cock no problem at all." Slap! Slap! Slap! "What a fuckin cock whore you turned out to be Master." Slap! Slap! Slap!

"Yes! Yes! I'm a fucking...nnghh...cock whore!" You echo back.

"Yeah you are baby." Slap! Slap! Slap! "My Master's the best fucking cock whore ever." Slap! Slap! Slap! "My Master's a fucking slut for his sister's big cock!"

"Gnnnnngh! GOD!" You were only half registering what she was saying as you were out of your fucking mind with orgasmic rapture. "I...can't...stop...cummingggg....AAHHHHHHHH!!!"

"Yeah! Cum for me Sir! Fuckin cum on your slaves big dick you dirty whore."

"HAAHHHHH!!!"

No mercy you had told her and you receive none. Even as you buck and gasp through another powerful climax she picks up the pace another level. Grabbing a handful of your hair she yanks it back hard, causing your body to arch back toward her. She held your head up and cranked to the side. "FUCKIN SCREAM BITCH!"

As if she had to ask.

"AAAAHHHHHHHHH!!!"

SMACK! She lays a withering spank across your ass between thrusts.

"HAHHH HAHHH! HARDER!"

"Yes Master!" She grunts obediently. SMACK! You buttock goes numb for the **** of her powerful blow.

SLAP! SLAP! SLAP! SLAP! She continues her fast cheek clapping hammering.

"GAOHHHHH!!!" Off you go again. One climax barely had time to recede before you were struck with the next.

All at once she pulls out completely, leaving your pelvis shuddering and your quivering ass gaping. Despite the orgasm it was the worst thing you had ever felt in your life! "OHH NOOOOOO! NO! NO!" It was as if you were missing a piece of yourself, you felt hollowed out and utterly ****. "Ohhhhh!" You cry in despair. "Put it back!"

Obedient as ever Fiona rams back into you and makes you feel whole once more. The feel of her thick rod sliding back through your hole was a special kind of ecstasy. The feeling of her filling your tunnel once more was heaven itself.

Still holding you by the hair she forces you higher to look into one of the wall mirrors. There you see the scene in all its glory. You bent over on the bed with your beautiful blonde big sister's cock buried in your ass. Your stomach and pubes were an absolute mess of jizz, as were the sheets beneath you, and still the precum and jizz dribbled from your manhood in a constant stream. On your face you see the silly blissful look of permanent O face.

"Fuckin...**** me!" You groan.

Again, ever the compliant sub, Fiona takes no time at all in wrapping the the length of leash between your wrists and her collar around your neck. Again you are awe of your sister-****. All the fire and fury still there, yet now precisely contained and controlled. There is such joy in her eyes as she pulls the leather tight around your neck and reams your tight ass.

"...glllrrrgghh...!" Is the only sound you can manage as the leash deprives of you air and blood to you brain.

SLAP! SLAP! SLAP! SLAP! The sounds of flesh hitting flesh get dimmer and dimmer as you slowly start to fade.

"GAHHHH!" At the last possible moment she release the pressure and you greedily suck in a lungful of air...while also hit the heights yet again. "OHHHHHHH!!!"

SLAP! SLAP! SLAP! SLAP! She pounds you mercilessly right through your grunting humping orgasm, fucking you so hard even the big heavy bed creaked and shifted to the onslaught. In the mirror you see your slim body jarring violently to each impact, another spurt of jizz is **** from your swinging dick. You couldn't have much more in you!

The leather goes taut again, your arms are **** painfully upward, she grabs your hair again then bites the back of your neck with the fierceness of a tiger. This new pain only joins the symphony of sensations coursing all through your body. She fucks you with nonstop aggression. She was a **** of nature and all you could do was try to survive her wrath.

She pulls the leash and your eyes bug out. With an evil toothy grin she leans in and whispers into your ear. "Okay, I think you're warmed up now Master."

"...gggnnnhhh..." You whine.