What is one moment that made you say “wow, that kid is a brat!”?

My little cousin was wanting to play my Xbox when we were little, his mom told him no, and I told him no, so when he is told no, he grabbed the nearest electronic and throws it as hard as possible at the ground. He almost broke my DS, two of my Xbox controllers, and a Wii remote like this. He is a lot better now last I hear.