My first email address when I went travelling was jamesking42. I chose it because there were already an army of james kings with the internet provider so when I tried to get jamesking, jimking, kingjames or any combination of my name, I kept being told my name was already being used by a more agile James King.
So, I figured there were probably less than 42 James Kings currently using the email name, and I like the idea of using 42, since it is the meaning of life in one of my favourite books (Hitchhikers guide to the universe).
It lasted for several years and I received and sent emails from Egypt, Peru, USA, Bolivia and Costa Rica. But when I joined my current company our IT security processes blocked my old email address. So after 3 months it was canned.
Now I am actually 42 years old and starting a blog, so I thought I would use the same name