Takes some time to think, but gets distracted.

All the possibilities were nearly overwhelming and Tom was getting too excited to think clearly, but before he wished for something he might regret he paused and took a deep breath. He needed some time alone to think about this.

"Hey, listen," Tom said, "I'm not feeling too great, so I'm going to walk home and lie down for a bit, ok?" They lived barely a block from the park and he knew that Sarah had some errands left to run so he should have plenty of time to himself.

Sarah frowned a little with concern, "Oh, ok. I still need to run some errands though, so I'll see you when I get home. Feel better, ok? I love you." She gave him a gentle kiss and started making her way back to the parking lot. He watched her walk away for a moment, still a bit overwhelmed with this new power, then turned and started walking home.

As he walked he tried to come up with some interesting wishes, and debated whether or not he should tell Sarah about the coin, but ultimately he decided to wait and see what life was like in this new reality.

When he got home he decided he needed a distraction so he sat down at his computer and pulled up some videos of his current favorite pornstar, Aliana Vamboo, an absolutely stunning Russian shemale with a perfect body and a gorgeous face. He had always had a little thing for trans porn but ever since he'd stumbled upon Aliana she had become his obsession.

I wish Sarah was even more into trans girls than I am, he thought, imagining her making out with Aliana, their breasts pressed against each other's in their passionate embrace, Sarah's hand stroking the Russian beauty's firm, velvety cock. The image sent him over the edge and he came with an earthshattering orgasm that left him trembling in ecstasy. As he sat there enjoying the afterglow he had a sudden thought: Did I just make a wish?