"Noun Verb P.O.W."

Would someone elaborate on this? I’ve seen it floating about quite a lot recently and I have an idea what it means, but I’d like elucidation.

Search is being wonky; sorry if it’s been covered.

During the primaries, Joe Biden said that every sentence out of Giuliani’s mouth consisted of a noun, a verb, and 9/11. McCain continues to bring up being a POW every chance he gets, so the same sarcastic criticism is being applied to him.

Ah, got it. Thanks.