Yes! Caz has always been a part of any username I've ever had on any forum or email address since I was a young teen (although I used to spell it Kazz back then). I always always keep Caz in my username so that people always know who I am. Ham is Hayden's nickname (it's his initials) and I got him, so Caz Got Ham.
I really need to change it to include Mik now, but not sure how.