屁屁 Traditional form: 屁屁 Pinyin (reading): pìpi Definitions: (child's term) buttocks; bottom Characters: 屁 - to break wind, to fart; the buttocks 屁 - to break wind, to fart; the buttocks Traditional characters: 屁 - to break wind, to fart; the buttocks 屁 - to break wind, to fart; the buttocks