"So, what all have you done with the ring?" asked Bobby.
"Not too much, I suppose," said Katie, "I've been adjusting me and Kellie's ages a bit at a time. I only decided to make us twins as we were heading to the beach."
"And yet Kellie never questioned anything and you both happen to be wearing identical bikinis and tattoos when you got here," said Bobby.
"The magic adjusted a lot of reality," said Katie, "It even changed our car from an old Honda to a new Jaguar. The only ones who know that anything's different now is you and me."
"So, basically that ring can alter reality any way that you wish," said Bobby.
"I'm not sure about every way," said Katie, "I think it has to involve aging in some way to make any changes. I have no idea what the limits of this thing are."
Bobby looked around the beach, which was packed with a lot of kids from all the families that have decided to go to the beach today. "Maybe we should start testing that," he said thoughtfully.
"Have anything in particular in mind?" asked Katie. She admitted that she was also curious to see what the ring could do.
"Well, let's start with something basic, namely range," said Bobby, "How about we turn every kid here into an adult?"
"I can get behind that," said Katie, "Problem is, how will we be able to keep track of who's really an adult afterwards?"
"I think I have an idea about that," said Bobby. The two of them talked over the idea of the experiment, each one able to point out little flaws in the other's suggestions until they've ironed it out.
Finally, Katie made her wish, "I wish that every kid below the age of 13 me or Bobby touch on this beach will age into a sexy 18 year old with reality around them adjusting to match and no one but me and Bobby noticing any changes. The changes will start 20 seconds after we've touched a kid and when me and Bobby leave the beach, they will change back when both of us say 'Release' and reality will shift back so no one will remember if anything happened at all."
After her wish was spoken, the ring glowed and both she and Bobby felt a tingle in their hands. Now they both had the ability to turn kids into adults with a simple touch so long as they were on the beach. With that, they started walking along the beach, looking for kids to try out this magic on.