That irrational fear that you accidentally signed your coworker’s “Goodbye and Best Wishes” card with a birthday message.
“May your cake be fresh and your ice cream cold” sort of makes sense, but only in a nonsensically silly way (at best).
Worst part is that since it is working its way secretly around the office, there is no way for me at check on my potential “Goodbye / Birthday Card” error.
At least, I’m sure it wasn’t a sympathy card… I think.