Sometimes you get angry and you feel like yelling. That's okay. Mister Rogers taught me that it's okay to feel feelings. As long as you don't try to take them out on other people.
Oh John, no, DON'T take them out on other people. Why are you yelling at that nice man, John? You're winning the football game! This isn't a time for yelling. This is a time for smiles and wonder and thinking about how you're going to go to Disney World. Just go to your happy place, John. Don't learn by watching your brother. He's a bad influence on you.
Just stop yelling please, John.