I'm surprised it took anyone this long to find out. Surly the drunks would have been able to tell after the first drop hit their tongue.
Just because someone drinks alcohol, it doesn't imply they are a drunk.
For some people, it's just an image thing. Me.. I don't care. If the vodka is harsh, just add more mixer.
As someone who managed a bar and is a trained cocktail waiter - I can spot the "image drinkers" a mile off.
The absolute prevention for hangovers: Drinking water in large quantity before going to sleep after consuming alcohol; eating also does the trick, but it's fattening
Nonsense. "Eating" by definition is not fattening - that depends upon what you eat. Drinking water is not an absolute prevention for hangovers at all - it simply keeps you hydrated.