A popular women’s joke about men is:
 
Q: How can you tell when a man is well-hung?
A: When you can just barely slip your finger in between his neck and the noose.
 
The joke has been cited in print since at least 1997. It was turned into a lawyer joke by at least 2001:
 
Q: How does a woman tell if her lawyer is well hung?
A: She can’t get her finger between the noose and his neck.
       
 
Over-Yonder.net
LOZ’s Joke Book Part 3 (Feb 97-Jun 97)
(...)
411. 
Q: How can you tell when a man is well-hung?
A: When you can just barely slip your finger in between his neck and the noose.
         
Google Books
My Little Bit of Nonsense
By Charlie Walker
Wakefield: C. Walker
2000
Pg. 5:
How can you tell when a man is well-hung?
When you can just barely slip your finger in between his neck and the noose.
 
Google Groups: alt.flame.shaft
for the girls 😉
SooZy 😊
2/4/00
(...)
How can you tell when a man is well hung?
When you can just barely slip your finger in between his neck and the noose.
 
Google Groups: nz.reg.hamilton.general
Lawyer Jokes
John Fulton
10/7/01
(...)
How does a woman tell if her lawyer is well hung? She can’t get her finger between the noose and his neck.
 
Google Groups: nz.reg.dunedin.general
Lawyer Jokes
Michael Phillips
1/25/02
(...)
How does a woman tell if her lawyer is well hung?
She can’t get her finger between the noose and his neck.
 
Google Books
Women vs Men & Men vs Women
By Ian Black
Edinburgh: Black & White Publishing Ltd.
2004
Pg. ?:
Q. How can you tell when a man is well hung?
A. When you can just barely slip your finger in between his neck and the noose
 
Twitter
Leon van den Berg
‏@LJvdBerg
#jokes How can you tell if a lawyer is well hung?
You can’t get a finger between the rope and his neck!
2:46 PM - 18 Aug 2009
 
Twitter
Jokes of the day
‏@jokesofthedaydn
Q: How can you tell if a lawyer is well hung?A: You can’t get a finger between the rope and h #jokes #lawyer http://bit.ly/1Ju2GPH
10:10 AM - 20 Feb 2015