Rumbear is a vibrant and energetic verb that means "to party" or "to go out and have fun." It's more specific and lively than just saying "salir" (to go out).
In "Me Voy de Rumba," the artist repeatedly declares, "No voy a dejar de rumbear por ti" (I'm not going to stop partying because of you) and "Me voy de rumba" (I'm going out to party). This word perfectly captures the song's theme of moving on from a breakup and embracing a carefree, celebratory attitude.
"Me Voy De Rumba" is Luis Coronel deciding heartbreak doesn't get to cancel his night out. He shrugs off an ex who tried to spoil his nights, "Intentar dañar mi noche" ("To try to ruin my night"), and answers with a flat refusal, "No voy amargar mi vida así" ("I'm not going to make my life bitter like this"). The verses work through the breakup like a checklist: deleting her from Instagram, skipping the fights, calling the whole relationship a trip he finally woke up from, "Yo ya desperté del viaje" ("I already woke up from the dream"). By the chorus he's not arguing his case anymore, just repeating "Yo llego hasta aquí" ("I'm done here") until it sticks, then heading out to party without her.