This may be the dumbest thing I’ve ever read. McCain showed up on Letterman recently, not to announce that he’s running, but rather to announce that he’ll be announcing that he’s running. How that doesn’t count as announcing that he’s running, I don’t know.

The Arizona Republican, surprising few Americans, made the announcement during an interview on CBS’s “Late Show with David Letterman,” which was taped for broadcast late on Wednesday.

“I am announcing that I will be a candidate for President of the United States,” McCain told Letterman.

McCain said he would make a formal announcement in April.

If that doesn’t make sense to you, you’re in good company. Or at least company with me. You’d think that getting on television and publicly saying you’ll run counts as an official announcement, but apparently not. My head hurts.