Kumbaya comes from Kum ba Yah, meaning come by here in Gullah, and began as an African American spiritual first recorded in the 1920s. It spread widely during the 1950s and 1960s folk revival, sung around campfires and at gatherings as a sincere call for unity. Over time the earnest image became shorthand in popular culture, and online creators flipped it into sarcasm. The short sung line now signals pretend harmony, which is why it fits so well over arguments, cringe reconciliations and uncomfortable group moments.