Then the subject changed and he asked after my parents. When I asked after his mother, he said that she had just moved into an assisted living facility. I asked, what is she now, 68, 69? (It was my vague impression that he had told me within the past couple years that she was 66.) He said, no, she's 75.
My friend is a nice guy, so didn't call me out on my math. It was only later that I realized what an incredibly stupid error I'd made.
I told this story to my daughter an hour or two later and she found it quite funny. Maybe a little too much so for my taste.
Anyway, your humble(d) correspondent is evidently not as smart as he thinks he is.
I actually get reminders of this quite frequently: I say dumb things all the time. I usually realize they're dumb the second they're out of my mouth, but by that point, it's too late.
I just wish I had the same edit function in my personal life I have on this blog.