ㄉㄚˇㄓㄨㄥˇzhǒngㄌㄧㄢˇliǎnㄔㄨㄥchōngㄆㄤˋ˙pàngzi

打肿脸充胖子
  1. 自己冒充胖子比喻要面子講排場自不量力 行善捐款量力而為千萬打腫臉充胖子」。

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