爬灰 Traditional form: 爬灰 Pinyin (reading): páhuī Definitions: incest between father-in-law and daughter-in-law also written 扒灰 Characters: 爬 - to climb, to scramble; to crawl, to creep 灰 - ashes; dust; lime, mortar Traditional characters: 爬 - to climb, to scramble; to crawl, to creep 灰 - ashes; dust; lime, mortar