Maritime Provençal
Es un gros Darnagas.
Meaning
He is a great blockhead.
Note : The word Darnagas means a shrike, and can only be used proverbially in the sense of a simpleton.
Theme
Source : La Tour-Keyrié, Recueil de proverbes provençaux (1882), Gallica — public domain. Maritime Mistralian normalisation by Lingua Nostra.