One time I was putting a book that I had borrowed back onto my sister's bookshelf in her room, and she walked in while I was doing it. She thought that I had been taking a book, and she got mad at me, telling me to give it back. I told her that I didn't take anything, and tried to walk out of the room. She blocked the door, and I started playing along, pretending to hide a book behind my back. She got mad at me for something that I didn't do, but I was provoking her and hiding the fact that I hadn't done it, so it led to a fight.
If I would have just told her that I hadn't taken anything and shown her my empty hands, she would have let me out of her room and we wouldn't have fought. But, I chose to be secretive and sneaky, and pretend to be taking a book. My behavior made her behavior change, and we got in a fight over nothing.