You look at the screenplay posted on-line, and what the Jive-Talkers are saying is gibberish, the ZAZ team couldn't speak jive for any reason (they're also referred to as "Black Dudes, but in the on-set transcript they're "Jivemen"), so the dialogue was ad-libbed by the two actors (Norman Alexander Gibbs and Al White) on set. Obviously, they wrote Barbara Billinsley's lines, as well. Some unsung trivia there, for the scene and talk (in it's previous sub-titled conversation) are brilliantly hilarious.
What's always made this scene funny for me, besides Billingsley's showing up, and the rather nicely rhythmed "jive" being spoken, was the basic joke that understanding a language doesn't always promote understanding. In fact, there is more mis-understanding (it seems) the more you learn; one has to be immersed in the culture to learn the idioms, the slang, the colloguialisms, the provincialisms, the emphases, and vernacular.
And if you look on a color wheel, the opposite of black is Barbara Billingsley.
The Set-Up: Set-up? The set-ups only last long enough to deliver the punch-lines.
Anyone who had "the fish" for dinner on board the flight from Los Angeles to Chicago is getting violently ill, including the entire flight crew, save the stewardesses.
But, that's not important right now....
INT. PASSENGER CABIN - NIGHT
A Black Dude is holding his stomach in pain.
JIVEMAN 1: Mnnnnnnnnnnnnnnnnnnnn, hmmmmmmmmmmmmmmmmmmmmmm.
RANDY: Can I get you something?
JIVEMAN 1: S'mo fo butter layin' me to the bone. Jackin' me up. Tightly.
RANDY: I'm sorry. I don't understand.
MRS. SCHIFF, a middle-aged woman, is seated behind the Black Dudes.
JIVEMAN 2: Cutty say he cant hang.MRS. SCHIFF: Oh, stewardess, I speak jive.
RANDY: Ohhhh, good.
RANDY: Would you tell him to just relax and I'll be back as
soon as I can with some medicine.
MRS. SCHIFF: Jus' hang loose, blood.
MRS. SCHIFF: She goonna catch you up on the`rebound on de medcide.
BLACK DUDE (indignantly): What it is, big mamma. My mamma didn't raise no dummy, I dug her rap.
MRS. SCHIFF: Cut me some slack, jack!
They engage in an argument in jive talk, with Mrs. Schiff getting the best of it.
MRS. SCHIFF: Chump don' wan' no help, chump don' git no help.
MRS. SCHIFF: Jive-ass dude don' got no brains, anyhow.
Words by Jerry Zucker, Jim Abrahams, and David Zucker
Pictures by Joseph F. Biroc and Jerry Zucker, Jim Abrahams, and David Zucker
Airplane! is available on DVD from Paramount Home Video.