I remember when i was six, and my brother 4. I took out my mom's suitcase, shoved him in there ( yes, I know, I'm evil ), zipped it almost the whole way so he could breathe, and rolled him around the house. I could hear him screaming in there. And every time, I would ask him, Which room are we in now? He would always answer right, but being the evil child i was, I told him "YOU"RE WRONG LOL".
Also, I remember the time, when i was four, when I stole my mom's nail polish, used it to paint all over the bathroom, and tripping over a bench and hitting my head on the bathtub. YEOWCH.