If an adult's being quiet, it probably means that they're reading, resting, relaxing — possibly even meditating. If a child's being quiet? You can be almost certain that they're up to no good. Case in point, these 21 troublemaking tots who thought that they could fool mom and dad with their sneakily silent ways but, sooner or later, got busted. We're willing to bet that whoever coined the phrase "silence is golden" definitely was not a parent!
Source: Flickr user Darin