What about drinking a litre of whisky (without choking on your own vomit)? Can anyone confirm that that doesn't work?
As a former Jameson addict, I'd say it's not a quick method. If you chug it at once, you're likely to vomit it back up. If drank over the course of a night, on a regular basis you may get liver failure, among other things. I never intentionally used it hoping it would kill me. Just spent a few years drunk.
And now I want a drink lol. Damn me and my addictive tendencies.