I assumed I was going to be the grown-ass adult I've seen get angry over the stupidest thing. I would get into a shouting match with a fern. But the first specific incident that came to mind wasn't even me, it was my mother.

One of my cousins got married years ago and my mother was hosting the groomsmen before the wedding. There were supposed to be sandwiches delivered. They didn't show up. So she called and screamed at the sandwich place for a good 10 minutes: them saying they don't have the order, her saying she had the receipt in her hand, etc. Her sister, the groom's mother, is crying.

Eventually she looked at the receipt and realized she called the wrong place. Sandwiches showed up a few minutes later.