This crying vocal is associated with the first-season Caillou episode “Caillou Joins the Circus.” The clean version uses audio taken from “Caillou Visits the Doctor,” avoiding the clanging effect layered over the cry elsewhere. Because the isolated wail is short, clear, and immediately expressive, it became useful beyond the original television scenes. Editors continue using it as a cartoon reaction for tantrums, failed attempts, mock disappointment, and situations where someone responds far too dramatically to a minor problem.