The sound comes from the Minion Pigs, the small green henchmen of the Bad Piggies in Rovio's Angry Birds franchise, which began as a mobile game in 2009. Their squeals and cheers were designed as short cartoon vocal effects to make the pigs seem mischievous rather than threatening. This wahoo cheer spread beyond the games through gameplay clips, edits and soundboards, where its extreme brevity made it easy to drop into other videos. It remains popular because it instantly signals mock triumph in a way that needs no context or dialogue.