I have reached a certain level of doneness

Oh my Mavis

So, I'll see in most Fairy Tail fanfics, they don't say 'Oh my god', they'll say 'Oh my Mavis', like she was some kind of goddess or something.

So, I came up with the headcannon that until joining a guild, they say 'Oh my god', but after joining a guild, the first master replaces 'God', or something.

I dunno.