I smell a stinky rat.

Donald J. Trump stood before the National Prayer Breakfast audience — of all places — and poked fun at the ratings of “Celebrity Apprentice,” which is now hosted by one-time muscleman/movie actor Arnold Schwarzenegger.

Arnold responded with a video dig at the president, suggesting the two men should trade jobs, given that Trump is such an expert on TV ratings. Arnold said he could become president and therefore enable Americans to “sleep comfortably at night.”

Oh, wait! Donald used to host the “Apprentice.” He retains the title of executive producer, even though he’s now got a fairly full plate trying to “make America great again.”

Might there possibly be a wink-wink agreement between the men to gin up a fake controversy to, um, boost ratings — and deliver more money to the president of the United States of America?

Why, such a thing would be so very “unpresidented.”