胡思亂想 [ㄏㄨˊ ㄙ ㄌㄨㄢˋ ㄒㄧㄤˇ; hu2 si1 luan4 xiang3] to indulge in flights of fancy (idiom); to let one's imagination run wild to have a bee in one's bonnet unrealistic utopian fantasy ◄ ►