The clip comes from user-generated soundboard culture, where short, exaggerated mouth noises are clipped, renamed and reposted for quick reaction use. Its title pairs a shocked 'omg' with 'blrr', the written form of the lip trill that ends the sound. It spread in the same short-form edit spaces as other goofy ahh sounds, where creators reuse familiar slurps and drooling noises as instant shorthand. Because no single scene or character defines it, the sound stays flexible and keeps being reused for thirst, hunger and silly gross-out jokes.