There's a passage in Robert Graves' autobiography "Goodbye to All That" about his fellow student T.E. Lawrence (Lawrence of Arabia) which whenever I read it as a teenager used to reduce me to tears of helpless laughter.
As a mature undergraduate at Oxford after the War, Lawrence was frighteningly well-read and rather held in awe by some of the younger Dons. One of the senior Dons, Professor Edgeworth, however, possessed an equally wide vocabulary and used his knowledge of the English language to intimidate his students. This ploy didn't always work. One evening, Lawrence returned from a visit to London, and Edgeworth met him at the gate. "Was it very caliginous in the Metropolis?" the Professor asked.
"Somewhat caliginous, but not altogether inspissated," Lawrence replied gravely.