The exact source of this I believe clip is not clearly documented, so it has spread mainly as a standalone reaction sound shared on soundboards and in short edits. Its appeal comes from how reusable the phrase is across sports predictions, gaming moments, fandom posts and ironic motivational videos. Because the wording is instantly understood without context, editors can drop it into almost any setup where confidence outruns evidence. That flexibility has kept it circulating long after many more specific meme sounds have faded from regular use.