吹牛皮 Traditional form: 吹牛皮 Pinyin (reading): chuīniúpí Definitions: to boast to talk big Characters: 吹 - to blow, to puff; to brag, to boast 牛 - ox, cow, bull 皮 - skin, hide, fur, feathers Traditional characters: 吹 - to blow, to puff; to brag, to boast 牛 - ox, cow, bull 皮 - skin, hide, fur, feathers