“What do you have when you have a lawyer buried up to his neck in sand? (lawyer joke)

One of the most popular of lawyer jokes is:
 
Q. What do you have when you have a lawyer buried up to his neck in sand?
A. Not enough sand.
 
The joke has been told since at least the mid-1980s. Other professions sometimes replace “lawyer” in the joke.
 
     
Google Books
You Can Get Anything You Want, But You Have to Do More Than Ask
BY Roger Dawson
New York, NY: Simon & Schuster
1986, ©1985
Pg. 127:
What do you have, they ask, when you see a lawyer buried up to his neck in sand? Not enough sand! they chortle.
 
27 March 1987, Aiken (SC) Standard, “As Ashley Cooper Sees The Issues” by Ashley Cooper, pg. 4A, col. 2:
What have you got when a politician is buried up to his neck in sand? Alex Thien quotes Robert J. Ringer as answering, “Not enough sand.”
     
16 July 1987, The Gazette (Cedar Rapids, IA), “Cyclone Comedy Club an unqualified hit in C. R.” by Jim Ecker, pg. 1C, col. 3:
“You know what you have when you have a Hawkeye buried up to his neck in sand?” asked Walden, baiting his audience.
 
“Not enough sand!”
 
Google Groups: comp.sys.atari.st
Clio’s anonymous ftp?
Brian Walker
1/1/89
(...)
Brian Walker, University of Colorado at Boulder
.(JavaScript must be enabled to view this email address)    ...!{ncar,nbires}!boulder!tramp!walkerb
Q: What do you have when you have a lawyer buried up to his neck in sand?
A: Not enough sand.
 
26 April 1989, Hutchinson (KS) News, “Out of Commission” by Duane Schrag, pg. 3, col. 4:
Q. What do you have with a lawyer up to his neck in sand?
A. Not quite enough sand.
 
Google Groups: eunet.jokes
Sand.
Bad Young Brother
6/8/89
Ok, here’s one i heard on the radio this morning.
Q: What do you have when you have an estate agent buried up to his neck in sand ?
A: Not enough sand.!
   
Google Books
How Professors Play the Cat Guarding the Cream:
Why we’re paying more and getting less in higher education
By Richard M. Huber
Fairfax, VA: George Mason University Press; Lanham, MD: Distributed by National Book Network
1992
Pg. 37:
Q: What do you have when five administrators are buried up to their neck in sand? A: Not enough sand.
 
Twitter
♬Charlie ☯‘Malley
‏@charliebadger99
Xx.. What do you have when a politician is buried up to his neck in sand?
Not enough sand.
#fernbridge
#LeonBrittan
7:13 AM - 8 Jul 2014