I was probably 9 or 10, a girl staying the day with my friend that was a boy. His dad came in and asked a question and I answered, "Yeah." Friend audibly sucked in a breath before his dad swung around and screamed, "How many times do I have to tell you, the answer is 'yes sir '?"
There's literally no way it could have been mistaken for my friend's voice. I was terrified until my mom picked me up. My friend was super apologetic, but even then I knew it wasn't his fault so I tried to make him feel better about it.
Not sure what happened to him but I can't imagine living in that level of terror every day of my childhood.