The phrase is Greek slang heard in everyday speech, with 'skase' as a blunt command to be quiet and 'epitelous' adding the sense of 'finally, at last'. As a standalone clip on soundboards it circulates mainly as a reaction sound, detached from any specific show or recording. Its appeal online is that non Greek speakers still read the fed up delivery instantly, so creators reuse it in edits, gaming clips and chat replies whenever someone has talked too long or made too much noise for too long overall.