australian slang- fuck yes, enthusiastically YES!
1:wanna smoke?
2: fuckin oath!

TRANSLATION

1: Would you like a cigarette?
2: Why thank you, good sir.
by fucknuckle July 15, 2006
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An absolute truth, a statement that is surely true or one that cannot be argued against. Also, a statement made by someone that agrees strongly with something that was said.
rdog: niggas is whilin'
kilt: fuckin oath
by robsdaman February 1, 2009
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A sign of great approval, or being pleased about something
P1: Do you want to go out
P2: Fuckin ay, fuckin oath
by Be hospital January 22, 2022
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