When your brain is on automatic pilot, and you say things you're supposed to say without really thinking about it, funny things can happen.
I wasn't the one on auto pilot; it was the person I dealt with.
A couple of days ago, I was at Smith's (a grocery store). They have one of those shopper's cards to get sale prices (and to accumulate points to get a better price at the gas station that's part of the store). I always give the card to the cashier as she (or he) begins to ring up my groceries, before she can ask, "Do you have a Smith's card?".
But the other day, the cashier's brain was definitely on automatic pilot. I handed her my card and she scanned it. As she handed the card back to me, she asked, "Do you have a Smith's card?" I answered, "Yeah, it's in your hand." We both laughed and so did the guy behind me in line. She said something about being having to say that all the time.
At least I was laughing as I left the store instead of grumbling about the long lines (they weren't long this time) or grumbling about them being out of the sale item I wanted (they weren't out this time).