"I wish I was your older brother," Mike said. One of the dollars of Wishing Money disappeared in a puff of smoke and his transformation began. Now there was only 98 dollars of Wishing Money left.
He began to get taller, his body hair got a little fuller (he even looked like he might need to shave on his face soon), and his body became more muscular. All in all, he looked about eight years older, making him around 20 years old, four years older than Jennifer. And just like Jennifer, his clothing ripped apart at being too tight on his changed body. He grew red in the face when he realized that his sister could see the bulge of his apparently larger penis in his very tight underpants (and it was stiff too, now since he was having a strong reaction to his much hotter sister). His underwear and socks seemed to be the only things that weren't turned to shreds due to his body change. Even his shoes split apart, since his feet were larger. He picked up his mostly shredded shirt and covered his naked chest with it, then covered his underwear with the remains of his jeans.
"Mike, I was going to tell you that there are rules for that Wishing Money," Jennifer said. Then she sighed. "At least you made a wish that only costs one dollar. Now, can I have the money back?"