Simon and Garfunkel

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For a groovy parent trains a groovy child, and the groovy child must be father of a groovy man; and what a few generations of groovy men can do is a marvel to think of.

The Saturday Review of Politics, Literature, Science and Art, Volume 17, January 9, 1865, p. 42.

Yes that's 1865. Not 1965.

So being "groovy" goes back quite a while. Of course, all groovies are not created equal. So to learn how groovies change when separated by a century, just click here.