Following are a number of back-translations as well as a sample translation for translators of Job 11:12:

• Kupsabiny: “But it is hard for a stupid person to realize/comprehend (something)
  like an ox will never produce a calf.” (Source: Kupsabiny Back Translation)
• Newari: “Just as the child of a wild donkey cannot be born as a human,
  in the same way [lit.: just like that] a foolish person cannot become wise.” (Source: Newari Back Translation)
• Hiligaynon: “It seemed impossible already for a foolish-one to become-wise, as it seemed impossible for a donkey to give-birth to a person.” (Source: Hiligaynon Back Translation)
• English: “Stupid people like you will start to become wise
  when wild donkeys stop giving birth to wild donkeys and start giving birth to tame donkeys.” (Source: Translation for Translators)