Now where did I see it ...? Something about a bodily function and a rope... ... ...
You can forgive the Poms as they've yet not learnt how to properly chill beer !
Oh, we've tried. We found that it is impossible to do.
Chilling gnat's piss is easy, however.
Gnat's piss examples include Coors and anything that needs to be advertised by a "muscle man" (Which may or may not also be Coors; nobody cares)
Maybe its due to the higher alcohol content of our beers, gnats piss is by default, largely just coloured water 
I don't think so. Some gnat's piss has standard alcohol content, and some beer has a low alcoholic content - and is quite pleasant in summer 
What ever, consuming quantities of said amber nectar over here in the UK is not to be advised during this heat as the alcohol actually dehydrates you so the experts warn...hang on, isn't that confirming the sentence above has some truth to it 
Beer will dehydrate you less than, say, a G&T. If 10mg of alcohol "dehydrates" you by encouraging urination, then with a beer you will get more water with that 10mg to "rehydrate" you.
The whole thing about beer dehydrating you is an old wives' tale. Each gram of alcohol consumed causes a net loss of around 10 ml of water (generally accepted and easy to remember figure). So a pint (568 ml) of 4% abv beer contains 22.7 ml of alcohol, giving 17.9 g of alcohol. This will cause the loss of 180ml of water, but the pint of beer will have supplied about 540 ml of water (with perhaps a small fudge factor for dissolved solids), leaving a net result of at 360 ml of additional hydration.
The G&T case is actually marginal as well: 25 ml shot of 40% gin - ~8gm alcohol - net fluid loss (80 - 15) = 65 ml to be made up with tonic water and ice. So as long as your G&T is 1:2.6 gin and tonic respectively you're not going to suffer dehydration, with any excess tonic over the 2.6 contributing to hydration, but by the time you get any significant hydration from drinking it you're going to be pissed as an admiral.
I don't think this is how it works. AFAIK the water passes through your system quite quickly, while the alcohol takes time to break down. Also I believe the headache associated with hangovers is caused by the buildup of acetaldehyde, which needs more water to help flush it from the system? After a quick read of this I'm not really much the wiser; looks like the answer is "it's complicated".
The fact remains however, that if I had enough to drink that I got wobbly the night before, the morning after I'll have a mouth drier than a sachet of desiccant beads in the Atacama desert.
That
is how it works. Alcohol is a diuretic, but a mild one (e.g.
https://pubmed.ncbi.nlm.nih.gov/10204649/). What rate you balance water at (homeostasis) is totally devolved from alcohol metabolism.
Ethyl alcohol is quickly metabolised in the liver to acetaldehyde via Alcohol Dehydrogenase (ADH). Acetaldehyde doesn't give you a hangover, it's quickly metabolised to acetate (in the form of AcetylCoA), by Aldehyde Dehydrogenase (unless you're deficient in aldehyde dehydrogenase like some asian populations are). Acetaldehyde is responsible for the increased superficial blood flow that makes you feel warm and your face redden when you've been drinking. If you're not 'glowing' then the acetaldehyde has fallen below physiologically significant levels. Acetate enters normal metabolic pathways as fuel (oxidative phosphorylation, Kreb's cycle) bound to Coenzyme A, so that too gets used up quickly. A typical ethanol metabolism rate for a healthy 70kg male is about 10g/hr, the availability of ADH and ALDH being the limiting factor and both can be induced via the classic operon route, which is why regular drinkers get drunk less easily.
Urination (and thus the use of water for urination) takes no significant part of ridding the body of either ethanol or acetaldehyde, any excretion via that route is purely incidental (0.7 - 1.5% of alcohol consumed is excreted unchanged in the urine). The kidneys
concentrate the things excreted via that route, thus if they were involved in getting rid of alcohol you'd drink beer and piss whiskey. We know you don't, not from any great scientific investigation, but simply because if you did it would have been discovered *ahem* naturally a very, very long time ago. Thus there is no use of water to 'flush out' alcohol or its metabolites.
Most of the hangover symptoms are caused by other alcohols that don't neatly pass down the well evolved EtOH->MeCHO->Acetate pathway. Those alcohols produce intermediate products that don't happily trip through the pathway - the classic being Methyl Alcohol, which is initially processed by Alcohol Dehydrogenase but instead of acetaldehyde produces formaldehyde which does direct damage by binding to everything in sight before Aldehyde Dehydrogenase can get anywhere near it.
Just because you wake up with a hangover and a dry mouth doesn't mean that you're dehydrated. There are plenty of things that can leave you with a dry mouth other than dehydration, snoring like a bull elephant for instance. In fact it's quite dangerous to assume that someone who can produce enough saliva to comfortably wet their mouth is adequately hydrated. Next time you have a hangover pinch the skin on the back of your hand. If it snaps back (speed depending on skin elasticity and hence age) you're not dehydrated. If it 'tents' and stays in the pinched shape, or takes significantly longer to snap back compared to what's normal for you, then you are dehydrated.
In the interests of science you should now go and get absolutely plastered, test your hydration and report back.
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