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1.
An ambiguous term that generally refers to something being positive & proper. Term was first used by a The London Street Wankers a Dj entity from Toronto Canada to put their stamp on something - letting you know it was quality.

Originally the term was Diggy Diggy Down and is still used and carries the same meaning as the short form.
Can be placed after any sentence. "Tunes were bumpin last night, thank you to everyone who reached ~ diggy down!"
by The London Street Wankers March 05, 2011