In reply to:

I once heard someone say that some of the words William Buckley liked to emit to make his interlocutor feel stupid on Firing Line were made up on the spot.

Reminds me of Blackadder: http://www.geocities.com/TelevisionCity/8889/bladder/ba3-2.txt (About 1/4 of the way down the page, Edmund Blackadder congratulates Dr Johnson on his Dictionary. The whole script is amusing (of course), but only that part is related.)