Life of a 13 year old- Hold off your orgasm
You pull out of Rachel's over stretched box right before you're about to cum. "Aren't you gonna finish you bastard?" your sister shoots a dirty look at you. "Well, I don't want to ruin the fun too soon now do I?", you grin, "I want to fuck your ass".
"What? No way! You'll tear me apart with that thing of yours!", her look of arrogance quickly turns to one of fear.
You say, "Well its either that or I cum in your twat."
"I just took my birth control pill before I ATTEMPTED to take a shower. Nice try."
"Well then I guess that's out of the question isn't it?", you press the head of your penis on her anus.
"No wait wait wait!!! Please, you can cum inside my mouth instead. Would that make you happy?", she insists.
"Nah.", you redouble your efforts and push harder. Her anal ring expands just to envelop the head of your cock, then swallows it whole.
She winces,"Ouch! Ok FINE. At least use some lube will you?"
You pull your head out of her anus and quickly grab the bottle of Loreal shampoo she used and squirt it on the palm of your hand and spread it across your shaft. "Spread your ass", you command her. She takes both hands and spreads her cheeks wide open, leaving her pucker hole exposed. You take a well lubed finger and circle her anus with it, causing her to coo softly. You then proceed to finger her rectum with your finger slowly, making sure you get her insides well lathered with your make shift lube. "That's nasty Alex!!!", Rachel complains. "I could have gone in dry", you state.
Now, her ass is well prepared for your assault. Once again press on her anus with your cock. However, this time, it is much easier. Your shaft slips right in her rectum, greeting you with the warm, tightness of her muscled walls. You continue up her rectal path until your balls come to a halt right above her clit. "Aw fuck, it feels like your splitting me in two!", Rachel says, grabbing the shower handles tightly, squeezing her eyes shut in pain. A tear or two falls down her cheeks as you begin to pull out. Your older sister groans in agony while you violate her. After each inch that you gain, you slowly pull back out until just your head remains, and then you would gently fuck her to that depth until her body becomes used to being there. Then, you press on, slowly gaining the next inch as her anus loosens and sucks you deeper. She was so hot and tight it almost hurt, but every bit of you that is inside her was experiencing a pleasure that you had never known before. Before you know it, you are comfortably fucking her asshole to the hilt. Unable to control herself, your sister begins to convulse, cumming all over your nuts. You didn't think she would actually be enjoying this!
"Well aren't you a little butt slut sis".
"That...wasn't...I can't control it...", She says between heavy pants.
You can feel her ass surround your cock; warm, wet, sticky, and churning. You begin to feel an orgasm coming once again. "Rachel, im going to cum in your ass", you murmur.
"Ewwww, NO! I don't even let my boyfriends do that!", she cries in protest.
"Too late!", you say. You discharge your bottled up semen as far into her ass as you can. You can almost hear your jizm splash against her anal walls. Each spurt of cum takes almost a full second to come out of your shaft as you shoot your load into her.
"No, no, no, get it out now!", Rachel wails and struggles to pull your out, but your too busy enjoying the euphoria. After 10 thick shots of sperm, you finally stop cumming. You pull out of her now gaping ass hole.
You run your hand through her wet hair, "Your such a good big sister Rachel!", cock still buried in her taint.
You: