That's too funny! Reminds me of a night with my kid a few months ago:
One night my son was mad at me for a priveledge he lost. I can't even remember what it was. After his martial arts class while we were in the car driving home (in the dark for a 25 minute drive) he sat in the backseat in his car seat (he's 5) and just chewed me out. Up one side and down the other.

Completely nonsensical, he just needed to yell. He had no idea what to actually say...but he knew how to argue. After a few minutes. I heard a big sigh and then silence. He was all worn out! It was all I could do to not laugh hysterically!