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When you don't know the lyrics of a song and you try to reproduce how it sounds more or less
Joe: Hey! Have you heard about this new song? It sounds like this: nana na na naaa....
Mary: Oh man! You're humming it so badly that I've no idea what was that.
by Eleniuss August 31, 2016
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3
Something with an extremely strong smell. Can be used in positive and negative manor!

Used in Ballymena northern ireland
"Lad your cane is humming!" Or " wow that grass smells humming!"
by weweeben June 13, 2018
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