A nincompoop is a fool or simpleton. I’ve heard this word used by the older crowd, and it strikes me as one of those words you would yell out in frustration, like this kid's uncle does...
My uncle’s gruff voice rang out from the window overlooking the street, where if you were outside you could only see the tops of people’s heads moving inside. Summer was ending and the neighborhood was more alive than it was the first days of summer, so everyone heard the rumble. I threw my baseball glove down and ran inside. There was the smell of something Italian on the stove and the sound of papers rustling from below.
I took timid steps toward the stairs leading to the bottom level of the house and saw my uncle tearing apart the drawer he’d told me many times to stay away from. I’d wondered for years why he kept that drawer locked, keeping the key with him at all times and pulling the handle whenever he passed it to be sure it hadn’t been tampered with.