The clip itself is a user made recording processed with a helium voice changer effect, built around a playful reference to Pocoyo, the small blue clad hero of the Spanish animated preschool series that first aired in 2005. Instead of using dialogue from the show, it turns the name into a short yo yo greeting that works out of context. Short pitched voice bites like this travel easily through meme edits and soundboards, where a familiar cartoon name and a squeaky delivery are enough to make a one second joke repeatable.
About this sound
A short helium pitched voice clip saying yo yo Pocoyo, made with a voice changer effect. Creators drop it as a random funny greeting in edits.
This is a very short helium pitched voice clip lasting under a second, with a squeaky high voice cheerfully saying yo yo Pocoyo. The pitch shift makes the greeting sound tiny, cartoonish and a little absurd, which is the whole joke. It lands like a random character popping into frame to say hello for no reason. Because it is so brief and bright, it cuts through music or dialogue instantly, gets a quick laugh from the surprise, and then disappears before it can wear out its welcome in an edit.