Before I go off topic, I just want to say: Gatorade and a couple slices of toast soaked with butter. Then go back to bed. Try waking up again in an hour or two. Get some food, fluid, and electrolytes into your system. That's all you can do.
Just because ive never gotten to any similar point of being drunk. Ive always been fully aware of what im up to so the thought of people actually not being aware from too much alcohol just seems completely alien to me.
Everyone is different, blacking out does happen but not as easily or at all for some people. I've been horribly drunk, to the point that I was deathly white and had to go to the doctor for an IV drip to re-hydrate the next day; couldn't even keep water down without puking. Didn't black out, remember everything.
On the other hand, I took a single dose of Ambien as recommended by my doctor and "blacked out" pretty much immediately, wandering around with my brain on autopilot instead of staying put in bed. I had to be told what I did during the night. Couldn't remember any conversations I had or things I did.