We've all heard a politician on their soapbox, pushing for some policy change or cleaning up after a scandal. Some will cut out a sharp point, while others leave the audience in bewilderment. You can often thank - or blame - the use of metaphor for the outcome of a speech.Most often, the problem comes down to either poorly chosen metaphors, or "mixed" metaphors. A mixed metaphor is one in which half of the statement refers to something metaphorically that doesn't match the other half. Here's a h.