blockhead, n.All

A Blockhead (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠never called a man of great virtue except in irony — who ever said such a one was of great virtue but an egregious blockhead?