#(aussie things)

1) if you name has a shorter version/nickname you use that. It's pretty uncommon to hear someone go by their full name (this is also a class thing. Upper class will be more likely to use their real name, lower class/country will get real creative with names)

2) if your name starts with a consonant then an -a your name can be shortened to that +az or that +azza (I.e Jeremy becomes Jazza, Barry becomes Baz, Sharon becomes Shazza)

3) if the -azza rules doesn't work you can shorten it and put an o on the end (Damien becomes Damo, Simpson becomes Simo)

4) or use a last name and apply the rules to that. Knew a lot of guys in high school that went by their last name in some form to a point I almost forgot their real name.