Donald Trump suffered another senior moment Monday. At his rally in Buffalo last night the Donald referred to 9/11 as 7-11:

“I wrote this out, and it’s very close to my heart,” he said at a rally in Buffalo on Monday night. “Because I was down there and I watched our police and our firemen down at 7-11, down at the World Trade Center right after it came down.”

You can watch Trump’s latest senior moment in this Vine tweeted by my RedState colleague Joe Cunningham [click the link]:

Donald Trump referred to the worst terror attack on U.S. soil as “7/11.” In New York. https://t.co/27yvqxCzmK

— Joe Cunningham (@JoePCunningham) April 19, 2016

According to Washington Examiner, Trump didn’t correct his mistake of naming the convenience store instead of the terror attacks.  Worse, old Donald didn’t even notice that he misspoke. But his 7/11 reference caused a stir on social media:

Great ad for @7eleven or the greatest ad for @7eleven? https://t.co/ZjkGW8Hmn8

— Matt Wilstein (@TheMattWilstein) April 19, 2016

Like his strange comment asking how is Joe Paterno that Trump made at a rally in Pittsburgh, I wonder if it might be related to age-related cognitive impairment. I agree with professor Mark Fisher. We should think seriously about this issue, especially because of Trump’s strange behavior. Trump’s unfounded charges against others, his inability to articulate his own positions except in tweets, his outlandish statements, his reversals and flip flops, all suggest a very important question — is Trump too old to be president?

It’s not just Trump. As Michael Tortorello points out, Bernie Sanders, Hillary Clinton and Trump would all be among the oldest ever sworn into office. Hillary is the baby of the group, at 69 and three months; Trump (70) or Sanders (75) would replace Ronald Reagan as the oldest president in history.