Filling out paperwork at 2:23 AM in the emergency room:
Nurse: I’m sorry you have to work so late.
Uncle Dale: (Realizing how both common and odd that is to say) I’m sorry you have to work so late.
Nurse: Well, you know, it’s my job.
UD: Funny you should mention that, it’s mine too.
We both stared at each other for a moment or two and both of us burst out laughing. I have no idea why either one of us thought that was so funny but at 2:30 in the morning it really was!