Junior officer of the RAAF (Royal Australian Air Force). Usually limited to Officer Cadets, Pilot Officers and Flying Officers. Often shortened to the term "Boggy".
"Listen up chaps. I need a Bog Rat to lead the march next Anzac Day.

"Mr Bigglesworth, you look like a Boggy who can use a sword. You'll do.

Be at the armory at 0730."
by John Hacking January 17, 2007
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dirty ugly disgusting looking chick that lurks and attaches herself with good looking friends
"oh great another bog rat trying to get in through her friends"
by morgz October 12, 2004
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a rat that lives down the toilet and eats poo.
Paul Wilson, thats fithly you bog rat!!!
by PAUL WHITTAKER December 15, 2003
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