zlacker

In NZ there are restrictions on what you can't name a child (titles that represent royalty e.g. "king" or certain positions, e.g. "justice", or ones that can lead to excessive mockery, e.g. "sex fruit"), but the line seems to be hazy as "Number 16 Bus Shelter" was apparently permitted.

As for legally renaming yourself, I really don't know if the same rules apply. Probably the title-related ones, or ones that could be offensive, but I'd expect that's about it.

But just getting called whatever you like isn't a problem. I know quite a few people who don't go by their legal first name.