I have been asked in the past: “why Diabetic Ninja?”
Basically I used to work in eCommerce (well I still do, but not for much longer) and I had a couple of friends who would describe themselves on job applications and/or CVs as stuff like “SEO Rock Star” or “eCommerce Ninja”. I said it was a bit unprofessional in my opinion, besides what next: “Diabetic Ninja”? Yeah the nickname stuck and I ended up buying the domain when .ninja domain names became available. It certainly makes for a more memorable email address in email@example.com if nothing else!