Legend has it that he always wore his boots in bed.

legend 的意思是"传说、传奇"，指代那些流传已久但可能无法考证的故事。 has it that 是一个固定搭配，表示"据说、传说"，用来引述传闻或未经证实的信息。 legend has it that 整体意思是"据传说"，用于讲述民间流传的故事或轶事。