"I wish," Jon told the stone in his hand, "that I was tall, muscular and really strong."
The stone flashed and Jon felt his body lurch as it grew bigger in an instant. His head span, disoriented by the way his viewpoint leapt upwards by about a foot. As the dizziness cleared, Jon caught a reflection in the small mirror on the back of his door. It should've been of his head and shoulders, but the mirror was now below his eye level and so his gaze was reflected downward. As he stood there all he could see in the mirror were the naked abs of his well-defined washboard stomach, a perfect six-pack.
Jon crouched in front of the mirror so he could see himself, and was amazed by how much of his body filled the view. His face was the same as always, but it was attached to this thick neck and shoulders of a guy who clearly worked out.
"Alright!" he beamed. "I need to get a better look at this bod!"
Jon yanked his bedroom door open and bounded across the hall to the bathroom, which had a full-length mirror inside. In his haste he didn't notice his own strength, which almost pulled the bedroom door off its hinges.
The bathroom was empty so Jon let himself in and locked the door. Leaving the wishing rock in the sink, he studied himself in the mirror. Jon was particularly impressed by the size of his arms. He raised and flexed them them several times, hypnotised by the way his prominent biceps and triceps bulge even more.
"This is so awesome," he mused, "Stud and Moose aren't going to mess with me now!"
Jon stripped off his pajama bottoms to reveal his thickly-muscled thighs and... his ordinary, unimpressive, unchanged dick. In fact with his increased height and mass, his poor little pecker looked smaller than ever in comparison.
"No, no," Jon shook his head. This would not do. He reached for the stone.
"I wish I had a big, thick, foot-long dick," he grinned.
The stone flashed and a second later Jon felt the girth of his new cock slap against his thigh, swung by the momentum of its instantaneous growth. He took the snake in his hand and felt its living warmth. Jon could hardly believe this... this salami sausage was a part of him.
His reflection showed an immense improvement. His junk no longer looked tiny compared to his muscular frame, in fact it dominated the view. Jon smiled, satisfied. There was no questioning his masculinity now, in fact he bet those stupid jocks wouldn't even dare come near him now!
Jon stepped back into his pajama bottoms, gently slipping his cock down his right trouser leg as he dressed. He put the wishing stone in his pocket and returned to his bedroom. Today, for once, he couldn't wait to get to school.
Zoe was not a morning person. Her alarm clock rang out briefly before she rolled over in bed and smashed it with a balled-up fist, strong enough to break open the plastic casing and shake loose the workings inside. Smiling, Zoe rolled back over and pulled the bedsheet up to cover her broad shoulder.
"Five more minutes," she grumbled. Slowly her right hand sank to her crotch, where the base of her massive penis left the folds of her vulva. Her fingers closed around her thick organ and began to nurse her morning wood.