Bogan is Australian and New Zealand English slang, usually pejorative, for a person who is, or is perceived to be uncouth, unsophisticated or of a lower-class background. According to the stereotype, the speech and mannerisms of “bogans” indicate poor education and uncultured upbringing. ‘Bogans’ usually reside in economically disadvantaged suburbs (often outer metropolitan) or rural areas.

heres a site where it tells you all the meanings.

http://www.bogan.com.au/definition/index.php

It’s a nonsense phrase.

Bogus: counterfiet or fake, not genuine.

Synonyms: false,phony, fake, counterfiet,fraudulent

Bogen is a district in eastern Bavaria

If you are serious.