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1.
An invisible substance that is responsible for all things unsolved.
This gunger is making my fucking hair stick up!

or

There is gunger all the floor, mom is going to be so pissed.

Synonym of MUNGER.
by Joseph K. Gunger October 01, 2003
 
2.
Another word for an Aussie, such as Yobbo, Skip etc.
Those Gungers at the Cricket were blind!
by Wog February 24, 2005