One popular lawyer joke is:
 
Q: What’s the difference between a lawyer and a gigolo?
A: A gigolo only screws one person at a time.
 
The joke has been cited in print sine at least 1990.
 
 
Google Groups: rec.humor
Ulysses S. Grant started the lawyer jokes! ^2
.(JavaScript must be enabled to view this email address)
10/15/90
(...)
Q. What’s the difference between a lawyer and a gigolo?
A. A gigolo only screws one person at a time.
   
Google Groups: alt.tasteless.jokes
Lawyer Jokes
Ben Magid
11/8/92
(...)
Q. What’s the difference between a lawyer and a gigolo?
A. A gigolo only screws one person at a time.
   
Google Books
Netscape & HTML Explorer
By Urban A. LeJeune and Jeff Duntemann
Scottsdale, AZ: Coriolis Group Books
1995
Pg. 419:
Q. What’s the difference between a lawyer and a gigolo?
A. A gigolo only screws one person at a time.
 
Google Groups: rec.humor
Canonical List of Lawyer Jokes
The Shadow
6/28/95
(...)
Q. What’s the difference between a lawyer and a gigolo?
A. A gigolo only screws one person at a time.
 
Google BOoks
The Lawyer’s Joke Book:
There Are Some Things a Rat Just Won’t Do
By John Patrick Dolan and Dale Irvin
Charleston, SC: Advantage Media Group
2008
Pg. 12:
What’s the difference between a lawyer and a gigolo?
The gigolo only screws one person at a time.
 
Google Groups: uk.rec.humour
What’s the difference between a lawyer and a gigolo?
bart
8/26/09
A gigolo only screws one person at a time.
 
Twitter
Bob Kostic
‏@causticbob
Q: What’s the difference between a lawyer and a gigolo?
A: A gigolo only screws one person at a time.
1:33 PM - 6 Mar 2016