Eggcorn?

[Charles Doyle]

I've just read a final exam esssay in which one of my students avers that metaphors "form the life and blood of proverbs and riddles."  A Google(TM) search for "the life and blood of" yields 639 hits (+ 207 in books), in contrast to "the life's blood of" with a surprisingly low 16,900 hits (+ 604 in books).

--Charlie

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The American Dialect Society - http://www.americandialect.org