The clip comes from a Mustafary video by Brazilian comedian Marcos Luque, built around his interaction with the figure known as the Ser Humaninho. The short sai ai ai line became easy to lift from the longer material because it is self contained, instantly recognisable to fans, and expressive without context. Online, it circulates in Portuguese speaking meme spaces, short video edits and sound collections as a quick spoken reaction. Its continued use comes from that brevity and familiarity, letting creators signal playful annoyance in about a second without adding dialogue or explanation afterward at all.