Moydodyr (Russian: Мойдоды́р) is a 1923 poem for children by Korney Chukovsky about a magical creature by the same name. The name "Moy do dyr" is literally translated as "Wash 'til Holes"; the common English translation is "Wash 'Em Clean".
Transcription: https://docs.google.com/document/d/1MZVMrvJW_qDhRdKKJsuh25kqpKZ0-YrRpiU54xEdXqo/edit?usp=sharing