I had a really insecure young manager who was almost half my age. Guy was a chickenshit. One day, while he was out, we reorganized our desks so that we'd not have our backs to the hallway. Instead, we turned our desks 180 degrees so that our backs were to the wall. He came around and said "well, this layout is not in accordance with the open office rules". I paused for a second, looked at him and replied "Oh really? No shit! How cute..." And proceeded to ignore him solemnly.

He didn't do shit. Was eventually let go for complete incompetence and negative reviews from every single one of his employees.