Conversation with Mason

{Preamble: Mason and I are laying in my bed while I am on my laptop and he is supposed to be going to sleep. He hands me the remote and wants me to turn the TV on for a few minutes. I tell him no and he starts acting up by thrashing around the bed like a wild monkey ...}

Me: If you are going to throw a fit, then you are going to your room.
Mason: {Stops thrashing around, looks at me and innocently says ...} What is throwing a fit?

Apparently we have never used that term, because he had no clue what I was talking about. I explained it to him in terms he definitely knows {i.e. whining, being naughty, etc}. He cracks me up!