Hmm, thought Jon, what about being turned into an inanimate object. He wanted to try that, but... then he'd just be sitting around for a long time. It might end up boring.
But what about just part of himself?
"This is my wish. For the next week, people who know me have the ability to transform my penis into something inanimate. They would do this when they need anything that is roughly the size and shape of a penis and it is easier to change me than to get it in another way. They might discuss it with me, but don't have to ask me for permission. They won't mind that they are using something attached to me, even if they would normally use it without me around. I will have normal sensation on the object except for pain. When I go to the bathroom and piss my penis will return to normal but people can change it again. Oh, and the people who do this can't be older than my parents or too much younger than me."
"I wish for all that."