"Holy shit!", exclaimed Jonathan "That is so awesome to have such power!" He sure wants to randomly shrink people, whoever they are, careless of the consequences or moral issues.
Going outside, he scans the surroundings, walking along, his back sac hanging on his shoulders. He suddenly hears a teen boy's voice yelling at someone. It comes from a house on a street corner, so the backyard is visible from one or the intersection of the streets. The fence is not very high, so he can see and hear more of what it was about. The teen boy seems to be around 13-14 years old, it is obvious that he feels overwhelmed by his two younger brothers' bad behaviour. They are all poolside, no parents around. Jonathan overheard that the teen has been put in charge by his parents as they are gone for a while. The kids seem not to be happy about being bossed around by their big bro.
To describe them a bit, shall we? The teen boy has light brown semi-long hair and a swimmer body, he is topless and wears a dark blue square-cut compression swimsuit. The two younger boys seem to be around 9 or 10 years old. They are noisy and very agitated, but impossible not to notice how cute they are. They are identical twins, but unlike their older brother, they have very short blond hair and blue eyes. The man with the power to shrink guys remembers when he used to be bossed around. So he has a very weird idea.
Using his power, Jonathan succeeds to shrink the teen boy to a doll size, so around 10 inches (25 cm) tall. The yelling guy is confused to see his surroundings expanding. It was not long before he realized he has shrunk down. His young brothers are very confused and are looking at him, not sure what or why this is happening. For an unknown reason, the teen's swimsuit shrank with him, so he was not naked.
Jonathan observes them a little longer to see what the boys will do. Without surprise, one of the young boys runs toward the older brother who tries to run away. But the other boy teams up with his twin bro to block him the way. It was not long before the tiny teen has been cornered and grabbed by one of his giant brothers. The view of that reversal role was very satisfying to witness. A good-looking teen boy held in one of his young brothers, squirming and trying to set himself free. The twins played with him like a toy, the tiny guys passing from hand to hand. He was not in charge anymore, his body had been touched and poked, and no part of his anatomy was ignored.
(Jonathan is thinking of what doing next)