Suzy Sheep is Peppa's best friend in Peppa Pig, the British preschool series that first aired in 2004. Her whistling became memorable because of a scene where Peppa struggles to whistle at all while Suzy does it instantly and cheerfully down the phone, highlighting their gentle rivalry. Short clips of that whistle later spread on soundboards and in fan edits, where the innocent tone works as a reaction for pretending not to notice something or acting sweetly smug. It remains popular for children's content and light meme edits.