Blegh is a long-running vocal staple in deathcore, a guttural shout used by vocalists to hype a breakdown and add texture between lyrics. This example comes from Visions by British deathcore band Osiah, whose downtuned, technical style helped the moment circulate among metal fans online. Isolated clips like this spread through soundboards, edits and reaction videos because the sound is instantly recognisable even to listeners who do not know the song. It remains popular as shorthand for extreme heaviness and over the top disgust.