Back in the day everybody watched the same TV programs, there used to be the "simultaneous flush at break time" problem (real or imagined), e.g. https://medium.

Back in the day everybody watched the same TV programs, there used to be the "simultaneous flush at break time" problem (real or imagined), e.g. https://medium.com/nycwater/the-big-flush-on-super-bowl-sunday-e0050699fa1b https://medium.com/nycwater/the-big-flush-on-super-bowl-sund...