Derja translation of 'صَبْلُو بِالقْمَعْ'

to explain extremely simply for someone who isn't getting it

He is really simple and stupid; he doesn't understand anything; pour it into his mind with a funnel and God willing he'll understand. راهو مصطك و ما يفهم شئ صبلو بالقمع و انشاء الله يفهم