Before you start reading this, I am sorry about the previous posting of this story. Something, somewhere, somehow, caused several repeats to appear in it of the same paragraph. I cannot recall the name of the person that pointed it out to me, but if you happen to read this, I thank you for letting me know.
Now on with the story.
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The house was quiet as Jeff opened the front door. He thought that someone would be here to welcome him home from college for the holidays, but there was no one to be found.
"Hello?" He called, still nothing.
He took his bags and headed upstairs to the room above the garage that once was his, but had since become the rec room. His Stepdad told him that there was still a Murphy bed up there for him and since he was only going to be here for a couple weeks, that worked out fine.
When he opened the door, he saw the pool table, football table, a couple old eighties era upright video games and then the bed.
Walking over to it, he threw his stuff down next to it then went and looked out the window. All the cars were gone which sort of confirmed to him that he was alone, so he went back and opened his bag.
"I Should have enough time for a quick change into something else."
He released the catches and pulled the bed down, took off his shirt and pants and put them aside to wash later. He pulled out a pair of shorts and tee shirt and set them aside, stood up and stretched, then looked around. He saw himself in a mirror and flexed his muscles a little and did a pretty lame impression of Arnold.
"I'm am baaack! It's not a toooma!"
Suddenly, as he was about to turn around, he heard a scream and someone jumped on his back.
At first he was about to panic, thinking it was a burglar or something, but then he saw the reflection in the mirror and the face of his step-sister in the reflection.
As he tried to buck her off, his foot hit his bag he had thrown on the floor and he lost his footing and went down on the floor with his face planted in the carpet. He then rolled over onto his back and looked up at the little blonde who was looking down at him with a mischievous grin.
"Jeffy!" She yelled as she quickly climbed back on top of him, looking at his contorted face as he struggled to catch his breath.
"Misty, damnit, you about gave me a heart attack, you twit." He tried to get up, but for someone as little as she was, she had some strength and locked her knees and legs around his waist.
She started tickling him on the ribs and in the armpits, "College did not make you any less ticklish!"
He was squirming to try to get away from her and as he did so, he felt her butt sliding around on his lap. He felt his dick start to stir.
"Oh, please no..." he said to himself as he felt his erection continue to grow. He has not been with his girlfriend in over a month. The feeling of Misty's little ass bouncing around on his lap was too much for him, and the last thing he wanted was for his step-sister to be embarrassed by seeing that and think he was a pervert.
Just then she slid down and put her full weight on his lap before he could do anything to hide it, his dick was now extremely hard and very firmly wedged between the cheeks of her ass.
Her eyes opened wide and she looked down, then looked back at him and their eyes met. His face getting redder and her grin getting wider. Then she scooted further down so that the tent in his shorts was visible between her legs, "Jeffy!" she said in mock punishment.
She watched the tent for several seconds, but to Jeff it felt like an eternity. She giggled a couple of times as the tent bounced with the throbbing of his dick.
He struggled to get up again, "C'mon, Mist... I need to..."
She did not move, but shocked him back into silence when she started poking it, watching his dick respond by bouncing up higher.
She stared down at his tent, then laughed, "Look, it's a jock in a box...ers!"
Then, without warning, she scooted down a little and pulled the boxers down, freeing Jeff's dick, and watched it as it pointed straight up in the air, between them.