You would die of diarrhea prob a lot of bacteria in there

Oh, great. Another person who thinks water is some kind of magical cure-all. Let me tell you, kid, a glass of water isn't going to fix all your problems, especially not a hangover. It's just like any other beverage, like a flavorless iceberg lettuce or a bland cauliflower. Sure, it can hydrate you and maybe even help with some of the symptoms, but it's not going to make all your pain go away. And if you're the kind of person who's getting hungover all the time, maybe it's time to take a look at your life choices and make some changes. Drinking water might help in the short term, but it's not a long-term solution to your problems. So go ahead and drink your little glass of water, but don't expect it to solve all your woes.