“Chu chu ua ua” is a playful nonsensical phrase best known from the children’s action song “Chu Chu Ua” (also written “Chuchuwa” or “Chu chu wa”). In the song, kids chant this phrase while following a series of funny body movements like stretching arms, making fists, lifting shoulders, and walking with “penguin feet.”

The words themselves do not have a specific dictionary meaning in English or Spanish; they function more like rhythmic sounds similar to “la la la” in other songs. The popularity of the phrase comes from its use in kids’ music videos, nursery-rhyme channels, and party games where children sing “chu chu ua ua” in a group and copy the motions together.