I'm really bad at hangovers. I could deal with the banging headache kind, but I don't get those. I get no headache at all, but it's replaced with a horrible queasy feeling that won't go away. So... usual cure:
1. Don't even think about getting out of bed until at least 5pm. Ideally later.
2. Get out of bed only to make a cup of tea.
3. Drink tea in bed. Lay there for a few more hours.
4. Attempt to eat a biscuit.
5. Fail at eating biscuit. Drink tea.
6. Repeat for the rest of the day, or even a couple of days if it was a really heavy session.
7. Eventually shake off the hangover and "oh Christ what did I do to make a tit of myself that night?" feeling, get back to feeling vaguely normal some time the following week.
The fact that I really can't be bothered with this process was largely responsible for my quitting drinking entirely when I was 19, which makes it all the more ridiculous that I started again.
THAT SAID... the last time I had to man up and be functional after the previous night's drinking session, the raspberry flavour Lucozade Sport was almost single-handedly responsible for getting me through it. Which makes sense 'cos it's exactly the same as Gatorade which everyone else seems to recommend.