what does the idiom"the fat lady thing"mean?

what does the idiomthe fat lady thingmean? what does the idiomat each other's throad mean? What does the idiom as easy as piemean? What does this idiom mean? What does this idiom mean? (look at what everyone said and write the correct idiom beside each of these sentences what does the sign you are pathetic when you are fishing.what does it mean?不要字面上的意思,是一句俚语.不对，说了不要字面意思，是一个idiom！ What does the man do? what does the man mean what does the man want what does the woman want? What does the teacher say? What does the boy ----- doing? What does the boy do “What does the writer do? what does the teacher like What does the fox say?