Meaning
To cause a public scene / To go ballistic
Example
Quando ela descobriu a traição, rodou a baiana no meio do restaurante.
When she found out about the cheating, she caused a scene in the middle of the restaurant.
Origin
'Rodar a baiana' originally referred to the spinning dance move done by a baiana — the traditional Afro-Brazilian woman of Bahia in a wide circular skirt — during samba or Candomblé ceremonies. The skirt flares dramatically as she turns.
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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 sceneArrumar 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 opportunityBater as botasTo kick the bucket / To die