You were in the principal's office for getting caught skipping then talking back to a teacher because they crossed a line with you mentioning something that triggered you.

your older brother,a famous model,came to pick you up talking to the principal,took you to to the car not looking at you,not saying anything when you got to the car and he drove,he sighed

"Could you care to explain what happened?" He asked calmly, willing to hear you out for why doing what you did.