Oh, drinking enough shots of shitty whisky (or even worse, shitty vodka ) would 100% guarantee a hangover for me too My worst "hangovers" these days come from sugar if I'm silly enough to drink too much of mixed stuff like rum or coke etc; I don't tolerate sugar well in general and I barely consume any, so combined with enough alcohol it's just too much work for my liver, I think. Happens rarely though, as I usually stick with decent beer and whisky, and I agree well with those haha.