già chơi trống bỏi

== Vietnamese == === Etymology === già +‎ chơi +‎ trống bỏi. === Pronunciation === (Hà Nội) IPA(key): [zaː˨˩ t͡ɕəːj˧˧ t͡ɕəwŋ͡m˧˦ ʔɓɔj˧˩] (Huế) IPA(key): [jaː˦˩ t͡ɕəːj˧˧ ʈəwŋ͡m˦˧˥ ʔɓɔj˧˨] (Saigon) IPA(key): [jaː˨˩ cəːj˧˧ ʈəwŋ͡m˦˥ ʔɓɔj˨˩˦] === Idiom === già chơi trống bỏi (literally) an old man playing the trống bỏi (a Vietnamese clapper drum toy played by children) (idiomatic) to behave in a way that is silly, immature, or unsuitable for one's age; to act childish