Meaning
I am leaving
Example
A festa tá boa, mas eu já vou chegar.
The party is good, but I am leaving now.
Origin
Apesar de usar o verbo chegar (ir para um lugar), no Recife significa chegar em casa, ou seja, ir embora.
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More idioms
Acertar na moscaTo guess correctly / To hit the nail on the headAmigo da onçaA fake/false friendAndar na linhaTo toe the line / To behave properlyArmar um barracoTo cause a public sceneRodar a baianaTo cause a public scene / To go ballisticArrumar sarna pra se coçarTo ask for troubleArrastar as asasTo hit on someone / To flirtAbrir o jogoTo come clean / To open upArregaçar as mangasTo roll up one's sleeves / To get to workAgarrar com unhas e dentesTo hold on for dear life / To seize an opportunity