Well, I think that everyone might have a few weird fantasies that no one knows about, am I right?
Was just sort of scooting around the internet looking for some image that might strike something in my mind to generate a caption, and this came floating by, and I snagged it. It's AI generated, but for this idea, it does mesh well with what I had in mind, and it still looks fairly realistic.
And at the heart of it, I think it boils down to .. there's fantasies that are fairly "normal" and not that hard to achieve, if you find a partner willing to do it, or have the money to pay for a "worker" to indulge you. Then there are the things like inflation, clownification, b!mbofication, some degradation fetishes (like head shaving, removing teeth, inflation, feeder & immobilization, etc ...) that are probably out of the realm of normality for the majority of society in every day life.
So I guess my point is, that there are probably lots of things that you might not want to share with your significant other, even if they say they are open and understanding. And that is where this caption comes in. Since it's fiction, you can indulge in whatever floats your particular boat, and this dude has some interesting ones. I have no idea what is going on down below the nipples, but I'm sure we can all figure out some other things that are happening to our protagonist .. and that is half the fun!
To sum it up, I made a caption about some extreme transformation fetishes and fantasies, and didn't really name any of them .. all the better to pass them along to you, the reader. Let your imagination run wild!