Me: "Rachel, your teacher asked you to do the next 6 sections in your workbook so you have a chance to get ahead of your classmates."
Rachel: "That's a good idea!"
Me: "It means you'll need to spend most of the day doing homework."
Rachel, a little deflated: "That's okay. I can do it."
Me: "Rachel, what day is it today?"
Rachel: "April 1st.... Ooooohhhh! April Fools' Day?"
