look up any word, like tbt:

1 definition by Parkmyute

 
1.
Usually a term used to confirm the truth of a statement.
The origins of this term are disputed but a plausible one is that it came from the Victorian Goldfields where Chinese workers used the term Ding kum so confirm a deal that is honest and true.
Fair dinkum mate those shoes have seen better days.
by Parkmyute November 20, 2012