It's a Mad Mad Mad Mad World: Filibuster?

Rewatching this 1963 film and at one point the dentist (Sid Caesar) says to Mickey Rooney's character, "Filibuster, filibuster..." -- this happens at the small airport right after the dentist and his wife have chartered the WW1 biplane.

I am assuming this relates to some earlier dialog (like when they were figuring the split of the money) that is on the cutting room floor but I can find nothing about this online.

What we see about the negotiations among the people about how much each is to receive is sort of summary -- we never see them talking about how the formulas were arrived at, that shares are based on number of cars, who went down, etc. but I suspect this complexity was in fact in the script and I am guessing that Mickey's character "filibusters" at some point during the discussion. I can understand deciding to cut most of the discussions out but that leaves the watcher of the movie mystified about "filibuster, filibuster." I guess this happens when a film is cut -- you forget sometimes that information is now missing. Or even you know that it is missing but there is no good way to fix subsequent scenes -- they could have then cut out the brief argument at the airport between the dentist and mickey's character but maybe they felt is was needed.

EDIT: BTW, there are scripts of this movie online but I suspect they are transcriptions of the film as it appeared so dialog that was cut would not show up in such a transcription. Anyway, I have not found the dialog which had to be early in the film in any script I have read through.