My neighbor was noisy all night, so I left a note on their door in the morning saying, “Please keep it quiet at night.” The noise started around 2 a.m.—thumping, creaking, laughter. Since I live in a thin-walled studio, I could hear everything clearly. It was especially embarrassing because it was the first night my boyfriend had stayed over. He just kept laughing while listening to it, while I buried my face under the pillow. After dropping him off in the morning, I wrote a polite note on a Post-it and stuck it on their door. When I got home from work in the evening, there was a reply taped to our door.