Demosthenes would correct me — 'the sow correcting Athena'.

In Plutarch, Moralia, Praecepta gerendae reipublicae (tr. H. N. Fowler, 1936). Plutarch also quotes Demosthenes' reply, "Yes, your Athena was caught in adultery last year!" Cited by Erasmus, Adagia, 1, 1, 40: Tritissimum apud Latinos autores adagium Ὗς τὴν Ἀθηνᾶν, id est Sus Mineruam, subaudiendum 'docet' aut 'monet'. See also: Theocritus, Idylls, 5, l. 23, Ὗς ποτ᾽ Ἀθαναίαν ἔριν ἤρισεν.—"The sow defied Athene!" (tr. Andrew Lang, 1889)—cited in Erasmus, Adagia, 1, 1, 41, Sus cum Minerva certamen suscepit.

Quotations | Etsi sus Minervam. Teaching one's grandmother. (lit. "The pig teaching Minerva") | Cicero, Epistulae ad Familiares, bk. 9, ep. 18 (tr. W. Glynn Williams, 1927) | In Latin they say Sus Minervam, when an unlearned dunce goeth about to teach his better or a more learned man, then doth the Hog teach Pallas, or as we say in English, the foul Sow teach the fair Lady to spin. | Edward Topsell, The History of Four-Footed Beasts and Serpents (1658) p. 523