I have a kink that I think I'm going to mention to my wife.
Can you tell me the kink
I have a very arousing fantasy about piss on a diaper.
It's good you want to share with your partner. But don't expect them to be into the same things you are.
You know what? Fuck you.
It's totally great that you want to share your fantasies with your wife and that you trust her enough to do so. But you have to make sure you respect her feelings about what you share and know that if it isn't something she's not into that it isn't an attack on you, rather a personal preference of hers.