Decepticlood (n.) – a visible collection of particles of water suspended in the air, usually at an elevation above the earth’s surface, that, contrary to the ominousness of its colouring, will not produce rain, but will, rather, make those observing said collection of particles wary of the ruinage of their day in the sun.
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Example: “We better finish these corndogs soon! It looks like precipitation is on its way. Wait a second – upon further reflection, those are obviously decepticloods. Pass the mustard!”