Sometimes I'll drink wine and think, "Has this gone bad, or is this just really bad wine?" Never having been trained in the finer points of wine tasting my only barometer for quality is whether or not I like it. Most often, I do not like it, but seeing as how I refuse to pay more for a bottle of wine than I would ever spend on a 6-pack of beer, my problem might be one of quality. And I even like vinegar; I'll add apple cider vinegar to my water sometimes, so you know this is really bad wine I'm talking about. So I drink my awful wine and wonder if it becomes toxic when it goes bad or merely tastes bad. And, as I work my way through the bottle, the wine tastes marginally less awful.