The phrase itself uses 'feck', a softer Irish-flavoured stand-in for a stronger swear word, which is why it works as a joke insult rather than a serious one. Online, short clips like this one circulate as reaction sounds because they are instantly recognisable, easy to drop into a video, and funny without needing any context. Its brevity is part of the appeal: at just over a second, it can punctuate a punchline, close out a clip, or serve as a quick audio reply in chats and edits, and that reusable, low-effort humour keeps it in rotation.