The sound comes from the long-running Green Giant advertising jingle associated with the brand's mascot and TV commercials. Online, the short "Ho ho ho, Green Giant" clip spread beyond ads because it is instantly recognizable and easy to use as a joke about height, size, or exaggerated entrances. It shows up often in basketball memes, where creators pair it with players who look enormous next to everyone else. Its staying power comes from that quick, unmistakable setup and payoff.