I figured I'd play along, as I was curious what would happen. So I wished "Yeah, I wish you could get those surgically removed." What happened next was fast. Before I knew it, the two of us were in a hospital, as if we teleported there. The girl, however, didn't seem to notice. A nurse walked towards us. "You scheduled for a breast reduction surgery?" the nurse asked. The girl nodded. "This way," the nurse said as she walked towards a door. We walked after her, but after the girl went through the door, the nurse told me that I couldn't come with her. "I'm sorry, sir, this area has to remain sterile during the operation.
Still confused of what just happened, I sat back down in the lobby. I was curious about what the results would be. I might have gone a bit far, I realized then, as my wishes were getting downright stupid. I sighed, "I might as well wish they'd go all the way and make a guy out of her now." It was a silly remark - of course I would not actually wish for that.
A few hours later - I had been reading the local magazines, some random girl suddenly flashed her boobs to me for no apparent reason and I sped up time for a bit - the nurse walked to me. "The operation was a success," he said. A hospital bed with the girl on it was being pushed into the hallway. She was awake and her breasts were completely gone. I walked to her and asked "how do you feel?"
"Weird," she replied, "I am glad that those breast thingies are gone now and my chest does feel a lot lighter, but now... another part of me feels weird."
I was confused. "Another part?" I asked, then I wished for her to tell me. "Well," she said, "it's as if there's something in my crotch. It almost feels like they sewed a penis on, but that doesn't make any sense, right?"
The nurse were overhearing us. "doesn't make any sense?" he said, "sir, didn't you ask for a full-on sex change? It's a bit odd that you hadn't gone through any kind of hormonal procedure, but that's fine. We've used the latest technology to give you an actual penis!"
The girl was shocked. "You... did what?"