No, I did not say that. Apparently the title of this post is the paper title of a paper Jim Buchanan delivered at a recent History of Economic Thought Conference in Richmond.
According to a brief write-up of Buchanan's presentation, this is what he said:
“Economists have been parading around, really very naked, walking around in space,” Buchanan said. “It’s time to recognize that.”
More here. The shot up top is a picture of Jimmy in action at that same conference.