The hangover and not knowing whether or not you're going to be able to hold your liquor.
For me it was less the being drunk and more the sobering up before everyone else and I just got depressed.
Sorted that problem now though so I can drink be drunk and not get depressed.
Absolutely nothing. It's the next day that's hell.
Ask a glass of water.
Sad how few people are looking after their towel these days...
It's all good, just not too often! (Which begs the question "how often is too often")
Waking up with someone you don't even know the name of.
I wouldn't know about that. o.O
Nothing. It's the morning after that's the killer.
Smoke a joint you get a better high and no hangover.