John McCain’s been coming up with some wacky-assed stuff lately. One would wonder if his advanced age is causing his fuzzy-headedness, but then one would be reminded that his advanced age is off limits, and cannot be noted, alluded to, or used as an explanation for confusion or seeming dementia. Sorry, I meant, misstatements.

First, McCain mistook his own voting history.

In a statement criticizing Obama’s positions (sic) on the Iranian Revolutionary Guard…McCain wrote, “This is the same organization that I voted to condemn as a terrorist organization when an amendment was on the floor of the United States Senate. Senator Obama refused to vote.”

The problem with the critique? McCain also missed that vote on the Kyl-Lieberman amendment on September 26, 2007. Records show that Obama was in New Hampshire and McCain was in New York instead of being in the Senate chamber for the vote in question.

O.K., I guess you could just shoot off your mouth about what you did without being sure of it, but it’s not recommended when you’re running for president and people actually check your facts. Then again, mixing up your voting record is small potatoes compared McCain’s other recent memory slip, which occurred this week while campaigning in Pennsylvania.

And then McCain told a rather moving story about his time as a P.O.W. “When I was first interrogated and really had to give some information because of the pressures, physical pressures on me, I named the starting lineup, defensive line of the Pittsburgh Steelers as my squadron mates.”

“Did you really?” asked the reporter.

“Yes,” McCain said.

“In your POW camp?” asked the reporter.

“Yes,” McCain said.

“Could you do it today?” asked the reporter.

“No, unfortunately,” McCain said.

Here’s one reason he likely couldn’t do it today — the Steelers aren’t the team whose defensive line McCain named for his Vietnamese tormentors. The Green Bay Packers are. At least according to every previous time McCain has told this story. And the McCain campaign just told ABC News that the senator made a mistake — it was, indeed, the Packers.

In McCain’s best-selling 1999 memoir “Faith of My Fathers,” McCain writes:

“Once my condition had stabilized, my interrogators resumed their work. Demands for military information were accompanied by threats to terminate my medical treatment if I did not cooperate. Eventually, I gave them my ship’s name and squadron number, and confirmed that my target had been the power plant. Pressed for more useful information, I gave the names of the Green Bay Packers offensive line, and said they were members of my squadron. When asked to identify future targets, I simply recited the names of a number of North Vietnamese cities that had already been bombed.”

In 2005, A&E ran a movie version of “Faith of My Fathers.”

And McCain discussed that precise clip on CNN.

The actor playing McCain, asked to name the men in his squadron, says: “Starr; Greg; McGee; Davis; Adderly; Brown; Ringo; Wood.”

Cut back to real life. The CNN anchor asks McCain: “For those who don’t know the story, were those NFL football players?”

“That was the starting lineup of the Green Bay Packers, the first Super Bowl champions, yes,” McCain responded. But it’s — it was the best I could think of at the time.”

Too bad McCain can’t think that fast anymore. How do you mix up something that was purportedly such a big deal it became the stuff of legend, landing prominent placement in your own autobiography and subsequent Hollywood dramatization? I’m not feeling so good about McCain’s mental acuity.