The line comes from Sega's bass fishing games, where the announcer comments on the size of your catch as you reel it in, reserving 'this one's huge' for the largest fish. Short clips from those games were later ripped and shared on soundboards, where the isolated shout escaped its fishing context completely. Because it is so brief and emphatic, creators began dropping it over any oversized object, character or reveal, and it has stayed in use as a quick, recognisable way to mock-hype something big in game edits.