I've evolved to keep this rule in mind when I hear almost any story/portrayal/claim/news anymore. Especially anything that feels sensational or too-good-to-be-true-at-first.

For example, people often lie about sex or money. National governments often lie about, well, pretty much anything that suits their best interests. When I say "lie" I don't mean completely wrong or totally false, merely, spun a certain way, sometimes a careful omission of critical modifiers, the use of weasel words, etc.