It can be troublesome, being both teacher and mom:
(as I'm tucking Joey in for bed tonight...)
Me: Let's have a good day of school tomorrow, OK?
Joey: I can't choose that. It just happens or doesn't.
Me: Hmmm (with a smile, because I believe him 100% and appreciate his honesty)
Joey: I love you, mom. I wanted to say that now because I might hate you tomorrow.
Me: Yes, I suppose you might, so let's enjoy this moment, shall we?
I'm not sure why, but I really enjoyed this moment.