The sound comes from La caída de Edgar, a home video uploaded to YouTube in 2006 that became one of the first viral hits in Mexico. It shows a boy trying to cross a creek on a makeshift branch bridge while another boy shakes it, prompting the repeated ya wey protests that made the clip famous across Latin America. Remixes, parodies and catchphrase references followed for years, and the audio still circulates because that escalating plea works for any moment about to go wrong.