My friend on his 21st birthday drank a dirty pint of pubes, semen (genuinely), beer, whisky, vodka, fanta fruit twist and spit. He was so hammered he didn't make it out. When I got in, I found him passed out on his bed. The room stank, but I thought hmm I'll sit here a while and look after him. After about 2 minutes of me arriving, he started throwing up but the vomit wasn't coming out. It was sort of exploding out. I realized he was choking on his own sick and immediately put him in the recovery position and tried to clear his airway. The sick stank so bad but I stayed up all morning (it was like 3am) making sure it didn't happen again. It was like that scene from Breaking Bad where that chick dies from heroin OD. I don't believe in fate, but if I wasn't there to look after him he could of died.
Always look after drunk people, no matter how inconvenient for you. You could save somebodies life.