A good mate of mine always says:
"There's no such thing as bad beer - there's beer you like, and beer you like a lot"
Having said that I once tasted some crap in Bali called Bali-Hai, and it was so attrocious that I actually poured it all out bar the first mouthful.
(Such a shame when they have some great beers there like Bintang and Anchor.)
Of course the 2 best alcoholic beverages in the world are XXXX Bitter Ale, and Bundaberg Rum ... both made up here in God's own country of course!