打肿脸充胖子
dǎ zhǒng liǎn chōng pàng zi
lit. to swell one's face up by slapping it to look imposing (idiom); to seek to impress by feigning more than one's abilities
打
dǎ
a semantically light, transitive verb that is combined with various grammatical objects to form compound verbs and verb-object phrases with a diverse range of meanings (e.g. 打傘|打伞[da3 san3] "to hold an umbrella", 打電話|打电话[da3 dian4 hua4] "to make a phone call", 打針|打针[da3 zhen1] "to get an injection", 打手套[da3 shou3 tao4] "to knit gloves", 打氣|打气[da3 qi4] "to inflate")
肿
zhǒng
to swell
脸
liǎn
face
充
chōng
sufficient; full
胖
pàng
fat
子
zi
noun suffix, as in 椅子[yi3 zi5] "chair"