One day, I'll learn. I'll learn to always finish the word I'm writing on the Smart Board BEFORE I stop to answer a question. This is especially important when you're determining if a relation is a function.
Yeah, I might have only wrote the first two letters of the word function before stopping to answer a student question. When the entire class starts laughing and you haven't told a joke, it's never a good sign.
That's a tough one to recover from. One day, I'll learn.