From the Medical College of Virginia's X-Ray yearbook, 1921.  See How to Hoodoo Hack a Yearbook.

From History of Troop A Cavalry, Connecticut National Guard and Its Service in the Great War as Co. D, 102d Machine Gun Battalion, 1919.

"Help help!!  Please do not kill these or bacon will cost you one dollar a pound."  Photo by Leslie Jones, date uncertain.

Here's a pig as king of the corn, from c. 1890.

"A dream of the sweet bye and bye," from c. 1890.

"He lards the lean earth as he walks along."  A pig as Falstaff, c. 1890.

Interestingly, we sent this image to a games aficionado, but he wasn't convinced that the pig was truly spectating skittles players.  He felt that the pig's expression was inscrutable, and the so-called skittle players are out-of-frame.  Yet the caption tells us what we're seeing; "case closed" as far as we're concerned.  To paraphrase René Magritte, this is not a pig, anyway.  If we can't roll with it, we'll never knock down any pins.

Is she perhaps threatening "No Skittles?"  (See this post.)