Don't do that. Don't drink liquid mercury.
I haven't read the article, I just saw the photo and normally I would give people the benefit of the doubt, or read the article because that's so outlandish.
But lately people have been eating and vaporizing and gargling poison, so I can't tell if this is a hypothetical and I don't want to potentially ruin my day by reading an article that ends up advocating the drinking of liquid mercury.
So I'm just going to say: Don't do that.