One could say it was just an oops. Like the anchor who said “ass cream” instead of “ice cream.” That’s understandable.
But in my featured video, the guy (Ernie Anastos) tried explaining it away by admitting what he meant to say was, “Keep plucking that chicken.” But as this NY Times bit points out, what does that mean?
I don't think it's a phrase (either version) that will make it into regular usage for me.