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derived from the words finkle (a term meaning nonsense) and matter (a state that something's in) finklematter is a made up story
Emma: ... And then I slayed the dragon!

Alyssa: She is totally making up that story!

Taylor: I know! It's total finklematter!
by Escalator May 03, 2009
crap, poo poo, and the like.
"you piece of finklematter!"
by deanna. March 04, 2008