Mostly (JMHO) he misstates things like this just to jerk peoples' chains.
I'm quite certain there is a lefty cellar-dweller someplace has a compilation of things like this that is used to "absolutely certify that Limbaugh is a) Speaking in code to his Skinhead followers or b) Totally and finally losing his mind."
To quote a popular meme: "Show me how I'm wrong."
I have no doubt of his rattling their chains. Snerdley would have corrected him otherwise. :)
Rush used to have a regular caller named Rita X. She is the one who used the term Chief Joints of Staff and Colin Colonel Powell. She was a real nutjob.