Joe Biden isn't on the campaign trail anymore, but that doesn't mean he's stopped committing his famous gaffes.
This one is a bit different. You'd think a man like Biden would remember how many grandchildren he has. I mean, you would think he couldn't get that wrong, right.
But he did, when he appeared on Jimmy Fallon's show last week. And his wife Jill did, too, correcting Joe during a Town Hall Sunday.
That's because science says they have more grandchildren than they will admit to.
Check out the videos below, and then read what the science actually says HERE.