Quick OT, first thing that came to mind for me was Davros of the Daeleks!"DARVO" sure looks like it's Aussie lingo (AKA "Strine"), but I don't think it is.
As any Aussie will tell you, we tend to shorten words, especially names. "Davo" is a name often used when referring to someone called "David". "Dave"'s more popular though IMO.
"Andy", "Johnno" etc. are the norm. (Pun unintended, but "Norm" refers to "Norman."
A tall person may find themselves being referred as "Lofty", Shorty", "Tiny"
"Arvo" means "afternoon", "barbie" means barbecue etc.
I'm sure some of us Aussies here could come up with all sorts of meanings for DARVO other than the "Deny, Attack, and Reverse Victim and Offender" (not with the same meaning though).
The era of the acronym. Language is going through rapid change and developing new paths and tangents at this point in history via the internet and the tech revolution. It's fascinating from an historical and linguistic perspective. The initial rate of change was extremely rapid. All Moo