This sound is tied to professional wrestler Randy “Macho Man” Savage, whose raspy voice and explosive delivery made “Oh yeah” one of his best known catchphrases. The line became widely recognized through wrestling promos and later reached an even broader audience through Slim Jim commercials in the 1990s. Online, the clip survives because it is instantly readable even out of context: one shout can signal hype, approval or exaggerated intensity in a fraction of a second.