Balls Deep

You could not wait a second longer. That powerful aching emptiness would soon drive you mad if you did not fill it. You could feel your juices flowing from your rear, steadily drip, drip, dripping from your ass onto Chloe's carpet. Straining your mouth to open a fraction of an inch further you let Fiona's massive cock fall from your lips. It slaps down against her stomach with a heavy wet thud. Pushing off from her knees you stand.

"Get up." You say, your impatience breaking through your attempts to stay cool and in control. "Get up!"

Fiona nods and stands up in front of you. Taking her by the arms you move her off to the left, your eyes never leave her enormous and beautiful hard on. Stepping past her you hurried sweep all of the items from bed. They bounce and clatter to the floor. Falling face forward onto the mattress you land with a bounce and shift so that your thighs hung over the edge of the mattress. Reaching back you roughly grab a butt cheek in each hand and spread yourself wide. Looking back at your sister you let out a yearning growl.

"Rrrmm. Fuck me Fiona. Fuck me now!"

Her intense stare is focused on your ass, her desire for you was every bit as overwhelming as yours for her. "Let me get some lube..."

"NO! No lube. I'm so fucking wet already." You command. "Fuck me NOW!" You spread your legs and your buttocks even further. "Put your cock inside of me and don't you dare stop until it's all the way in. You hear me!? No matter what I say...don't stop!"

"Jesse...you don't know what you're aski..." You could hear her concern but you were wild with incestuous desire.

"Do it now Fiona."

"Only Mom can handle..."

"Do it!"

"I don't want to hurt y..."

"NOW!" You bark. "Obey your Master ****!"

She bites her lips and nods. "Yes Sir."

You turn your head back and stare straight ahead. Fiona moves up behind you, her hand pets down your back tenderly and lovingly. You feel the tip of her cock run up and down the crack of your ass before settling in on your man pussy. Just the sensation of her dick making contact with your sphincter damn near makes you cum right there.

You take a deep breath and hold it. You pull your cheeks as wide as they would go.

A firm pressure pushes against your anus and steadily increases. Your sphincter tightens involuntarily against the mammoth intruder and you have to will yourself to relax. You remember back to the deep satisfying bliss you felt when Chloe took your cherry that afternoon and you ready yourself to feel it again. Your back door gradually opens to the unrelenting pressure of Fiona's cock. You open to her fully, expecting the same sensation as this afternoon, but are surprised as her tapered tip filled every bit of space you had to give it and demanded more. Fiona continues to press inside. With the tip now inside your anus there was no way to stop her as you feel her thick rod **** your hole wider and wider.

Your eyes flare wide and you go to scream but the cry is caught in your throat. "...gllghhh..."

Your tight hole stretches...and stretches...and STRETCHES!

Pleasure is abruptly replaced by red hot pain! This wasn't like Chloe at all! OH GOD! TOO MUCH! TOO FAST! She was going to tear you apart!

You try desperately to call out a command for her to stop before she split you in two but all you can manage is a gulping scream. "AHH! AHHHHHHHHHH! AAAAHHHHHHHHHHHHH!!!"

Fiona hesitates for just a moment...before faithfully following out your last order to her like the good **** she was. With a smooth powerful forward thrust she sinks inch after inch after hard girthy inch deep into your reamed out asshole, you were sure it must have been tearing you but the all consuming agony made it impossible to tell. You could physically feel a huge foreign mass entering your bowels and then beyond, pushing organs aside and distending intestines along the way. She was just so fucking big! It was like having a baby in reverse. Inch after inch after inch it continued into your overstuffed guts. It felt like it would never stop, you half expected it to push right through your chest and burst out your fucking mouth!

"AAAEEEEAAAAHHHHHHHH!!!" As if from another room you hear your muffled wails of agony. Your body is convulsing and your vision is quickly fading black around the edges. That last thing you feel before losing consciousness is your big sister's body press into your buttocks as Fiona buries herself balls deep into your booty.