Poesnaai Share definition Flag Classic Afrikaans slang, meaning 'cuntfuck'. Used liberally in the Western Cape region of South Africa. Andrew how could you do that? You are such a poesnaai! Poesnaai by AdmiralDope February 13, 2009 0 0 Get merch Get the Poesnaai mug. Buy Now — $32.95 See more merch