Do you actively try to align your metaphors and similes with the general themes of your text? Or do you simply try to write what seems to you to be “the best” metaphor/simile you can think of at any given time. For instance, if you’re writing a story/poem about animal husbandry, and you’re talking about artificial swine insemination, do you liken the pig’s vagina to a “soft, collapsed and claustrophobic barn,” or to a “gooey, uncooked garlic knot”? Let’s say the later was the “more apt” comparison; would you still use it even though it had nothing to do with the context?