I have a pretty common name for guys born when I was born - let’s pretend it’s “Joseph.” Many guys with the name don’t mind going by “Joey,” and as a result, many people automatically start calling guys with this name either “Joe” or “Joey” without thinking about it much.
But I hate the diminutive version of my name; I went by it when I was a kid, and when I became a teenager I made a conscious decision to start going by the adult version. A slight complication here is that any adult guy that goes by the kiddie diminutive version sounds like a creepy child molester; unlike “Joe” or “Mike,” this closer to an adult Paul going by “Paulie” - just instant squick-ville.
However, many people feel free to just start calling me by the diminutive, and I HATE it. Most of these tend to be older people, and I really don’t mind it as it’s kind of sweet and paternal since they’re old, but lately I’ve met some peers that will occasionally slip into calling me that.
I’d really like to tell them that I much prefer my regular name, but it’s been months now and I feel like it’s going to make me look like a psycho if I suddenly blurt out, “Don’t call me ‘Paulie!’ I hate it!” after not saying anything for months.