I always knew that chickens egg would crack and it'd live its best life.

bajinga

Deed poll was sufficient for both of those for a name change for me, as well as for the registry office two months ago. I cannot speak for changing gender though, merely name.

Lots of places are very weird about it though because their staff think we have "legal names". I switched banks over the weird bullshit mine was pulling. The number of looks my piece of A4 with a couple of signatures on it has received from staff that then have to go check with someone that it's actually how it works, my gods. No, I know it doesn't look fancy, it doesn't have to, go ask your supervisor if you don't believe me.

You are correct on the second one

Badzunga in katakana

I'm saying it in a heavy Japanese accent.

Baaaaazziinga