Your sister, Kelly

"What the hell are you doing, dude?" Kelly says with her hand on her soldier.

You jump and turn to her. "Wh-Wha?"

"You just jumped out of your chair like a bat out of hell," Kelly says. "And your lunch is getting cold. Now I see you out here grunting like a pig. What are you looking at?"

You find yourself unable to focus on anything Ashley has said because Emma is continuing her **** on your dick. You've never felt such intense pleasure in your life.

"Oh, I see," Kelly says with a smirk. "You're perving on our hot neighbor."

"Wh-What? N-No I'm... *gasp*" You try to finish the sentence, but Emma is now really pounding at her asshole with your disembodied dick. You feel the cum roiling in your balls again, but you refuse to let yourself orgasm with your sister in earshot.

"Wait, you're not jacking it right now, are you?" Your sister looks down and sees your pants still on. "Well, that's a relief. Judging from what I was hearing, I totally thought you were just beating the shit out of your dick."

Your attention is back on Emma as she continuously fucks herself. You can't hear your sister at all. Your every thought is on trying to keep yourself from shooting your load. Every muscle on you is tense with the struggle to hold it back. Emma's ass pumps and pumps at your cock, seeming to be so eager for you to just let your load loose.

"Can't say I blame you, though," Kelly says. "Even I know she's damn sexy. Hell, if I'm being honest, I've totally watched her myself as I've..." Kelly blushes a little and smiles. "Well. Never mind. Come on, your lunch is getting cold. Mom was worried you were sick in the bathroom."

"I-I'll be there in a... Mmm... in a minute."

Kelly rolls her eyes. "Just don't jizz in the hallway."

As Kelly walks back to the kitchen, you take a moment to make sure she's away. Then, without another second's hesitation, your body tenses and you unleash a huge load of cum right up Emma's ass. Spurt after spurt pumps out of your cock. Her asshole seems to milk you of more and more.

Finally, you're spent and, quickly, you reach into your pants and take off the MCR. Luckily, the juices from all that sex seem to have disappeared.

You look out to Emma and she doesn't even seem phased by anything that's happened.