View Message

I think Johnny is a bit juvenile, but I also know adults called Johnny and it sounds fine, so I think it can depend on the person. I don't think it's more juvenile than Charlie, or any other -ie/-y nickname name.

---

I would personally always go for a full name (John) on the birth certificate, just in case. For example, my cousin Alfie is just Alfie, but I personally would've gone for Alfred with Alfie as a nickname just so he has the option when he's older. But that's just personal perference