The company that I work for is on floors 30-35. Each of those floors features a men's room with 2 urinals, and each urinal has its own unique flushing routine. I've never seen anything like it. The layouts of the floors are exactly the same, so they're basically right on top of each other; and the urinals themselves are the exact same model and make. Some finish flushing as soon as you let go of the handle; some never start. Some keep going after you've finished washing your hands and have starting walking back towards the hallway; some go on for a long time and make scary plumbing sounds while they're doing it.