When you were a kid, what was the worst thing you got your sibling in trouble for?

I think I was about 6. My older brother was giving me an Indian burn and I told him if he didn't stop I'd get Dad to belt him. So he dared me to and hoicked up some spit to drop on me. So I yelled "I'm going to kill you Thevy, you f#cking c#nt!" There was a stunned silence broken only by the sound of Dad coming down the hall. James was still stunned when he was hauled away.. 😅