Off the Top of One’s Head By EvilOctober 4, 2016December 22, 2021Popular Expression Off the Top of One’s Head = 1) answering a question without much thought or knowledge 2) based on what you remember Ex: Person #1: How much can I sell my car for? Person #2: “Off the top of my head” I would say about a thousand. ( a guess without knowing precisely) Ex: “Off the top of my head,” I can only name about two famous American artists. (based on what I can remember) BACK to Popular Expressions