It depends on what sort you get: In England I've only ever seen/been able to get 55% stuff, which is barely worse to drink then vodka, in fact it didn't taste as bad. Abroad though, there was a 90% bottle, which is the type people generally mean if they start talking about it. We never got around to having it, although another friend did who just described it as getting blackout-drunk, none of that hallucinogen stuff.