[正] A guilty person gives himself away by conspicuously protesting his innocence.
Folk tale. A man buried his silver in the ground and put up a note, saying: "Three hundred ounces of silver is not buried here." His neighbour Ah Erh stole the silver and also put up a note with this: "Your neighbour Ah Erh didn\'t steal it." ---A metaphor for one\'s being exposed by one\'s own vindication. 与上句一样，对不清楚故事背景的人，只有把一切解释得明白一点了。