The phrase 'vamos rir' is Portuguese for 'let's laugh,' and it comes from João Kléber's hidden-camera prank segments on RedeTV in Brazil, where it was used as a short introductory vignette for unseen pranks. The presenter became known in Brazil for his playful hosting style and elaborate pegadinhas, and clips of his intros circulated online among meme and soundboard communities. Brazilian creators now reuse the cue to signal that a joke or prank is coming, keeping it alive as a familiar, lighthearted opening for comedy edits.