"Much ado about something that is really nothing."  From The Children's Newspaper, 1933.

We often sleep in on "something something mornings."  From Something Something Morning by Chris Mason.

From Collier's, 1915.

From The Something of the Something Something by Bryan Ray.

From A Bad Day for the Sung Dynasty by Frank Kuppner, 1984.

A "sense of something" at the profoundly haunted, cursed, and doomed Collinwood estate.  It's the biggest understatement in over a thousand episodes.  From Dark Shadows episode 1086.

From City Life by George Winslow Pierce, 1914.

In this case, the "something something" is something that has a lot of distractions in it.  From Dark Shadows episode 1122.

In this case, "something something" means a gypsy curse that kills every person you love.  From Dark Shadows episode 797.

From The Boomer Bible by R. F. Laird, 1991.

Here's something translated from the original Italian.  The translation loses something, eh?  From Understanding (of Language) Are Not Enough by Volodymyr Bilyk.

We're firm believers in the "Something Connection."  From 1984, via Mail Order Apocrypha.

From The Divine Sharpness In the Heart of God by Karin Spirn, 2014.

From David Hallamshire's Yorkshire Fables.

From That Fated Shore by Phil Farrand, 2009.

Here's a line from a poem in Hannah Claire Miller's The Feeling of Closing Your Eyes.

From Wendy C. Fries' Sherlock Holmes and John Watson: The Day They Met.

"Everything was fitting together just right.  All of the Somethings were living things and were growing" (J.B. Symons, in something called The Turms [sic] of Peace).

Here's what something something had to do with the moon landing, from Mark Kelly's Astrotwins: Project Blastoff.