You know that you can't drink that old ass beer, right?
It couldn't taste any worse than it originally did. I tried one about 40 years ago or so when it was on the market.
It tasted almost as bad as Boggs beer from Tasmania and not quite as bad as Grizzly beer from Canada.
And you could still taste it the next day. With even puking if you could refrain from that.
I reference to the quote, Ass beer is a good way to describe it. It tastes like you might imagine an ass would taste.