All light beer is pretty bad, but it is mostly inoffensive too. Corona, Sol, etc are similar. These are probably the worst beers that are readily available in Canadian and American bars. Budweiser is awful.
I guess Bavaria 8.6 is pretty terrible, I think its worse than Faxe 10.
Oh, now I remember the worst beer I've ever had. I had a warm stout on
the border between Cambodia and Vietnam. They put ice in it. I think it
was called Imperial Stout.
Labatt Max Ice is fucking horrible, but
that's to be expected when you can buy 1.2L of it for $5.
Japan had some awful beers, nothing especially bad but they mix a rice malt with their regular malt for cheaper beer.
Ohhh... now I remember another horrible one. We had a terribly sour
Stout this Winter. There's a festival called Winterlicious for a month
or so and one of the breweries made a special beer. It was God-awful.
If you want to drink a horrible beer, just drink it cold. Cold temperatures mask the flavours of the beer. Certain beers are even better when not served really cold, like English Ales. Of course, just about everything is really gross warm.