I am not a big drinker of fruit juice, unless it is mixed with gin, but my partner (who does not drink gin or anything like that) is a fan. He often buys juice for my place, drinks some of it, and leaves the rest for me to drink or ignore until he returns. This is how a carton of POG ended up in my fridge.
Source: LifeHacker – Fix Too-Sweet Fruit Juice With Apple Cider Vinegar