Compadre Washington is the charismatic vocalist of É o Tchan, the Bahian axé group that dominated Brazilian parties in the 1990s with playful call-and-response songs. His improvised interjections, full of slang and double meanings, became catchphrases repeated far beyond the stage. This Eita Mainha line later resurfaced in a widely shared YouTube advertisement that many viewers watched in full, helping the shout spread again as a WhatsApp audio and meme sound for exaggerated surprise and celebration.