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1.
An Australian Aboriginal creole term meaning "Brother".
Hey Yubba!, how bout we go get some KFC!.
by Marcus Rosenblat April 15, 2008
 
2.
Australian aboriginal slang for friend.
Hey Yubba, let's go to the pub.
by Bing Tockley January 10, 2008
 
3.
a person who says random things to you on msn
Yubba:HEY!!! OMGBBQROLFHAX!!!!
You: WTF...
by IainM September 02, 2006