jackernape
A loud and angry word you throw at someone when they are being the worst and you're too mad to be polite.
My mom is a jackernape. She said I couldn't go to the concert because I got a B on my math test.
My brother is a jackernape. He took my phone and played games for three hours.
My teacher is a jackernape. She gave me extra homework because I asked for a snack.