Kenny McCormick is one of the main characters in the long-running animated series South Park, where his muffled voice and frequent misfortunes made him a fan favourite. Short celebratory clips featuring the character have circulated widely as reaction sounds on soundboards and in fan edits, where the woohoo works as instant shorthand for excitement. Its appeal comes from that instant recognition: even without context, listeners connect the cheerful shout to South Park's playful, irreverent humour and reuse it whenever a moment deserves an exaggerated celebration.