This sound is a generic toy squeak rather than a quote tied to one famous character or scene. Online, rubber duck squeaks have long been used in short-form edits, kids' humor, pet videos and playful reaction posts because the sound is instantly recognizable and easy to time to a visual gag. Its appeal comes from that bright, innocent tone: it suggests silliness without sounding harsh, so creators keep using it for cute fails, bath jokes and comic boops across social platforms.