The line comes from the Spanish-language version of SpongeBob SquarePants, where Bob Esponja is the character's name in Spain and Latin America. Short clips like this one circulate widely on soundboards and in meme edits because the phrase is brief, easy to recognise and funny even out of context. Doubloons are old pirate gold coins, so the line naturally suits treasure, money and gaming jokes, and Spanish-speaking creators in particular reuse it as a quick reaction to a small but welcome windfall.