“How do you know a man is thinking about his future? He buys two cases of beer instead of one”

“How do you know a man is thinking about his future? He buys two cases of beer instead of one” is a jocular saying that has been printed on many images. That is, he buys more beer than he can drink in just one night.
 
The joke was posted on a list of other man-bashing jokes on the newsgroup alt.tasteless.jokes on March 24, 1996.
   
       
Google Groups: alt.tasteless.jokes
Men
Laura Schooler
3/24/96
(...)
97   Q.  How does a man show he’s planning for the future?
    A.  He buys two cases of beer instead of one. 
 
Google Groups: rec.arts.tv.soaps.abc
ALL: TAN: Jokes
Cathy Sands
4/11/96
(...)
How does a man show he’s planning for the future?
He buys two cases of beer instead of one.
 
Google Groups: za.humour
The Problem with men?
Chancellor of Globania
8/27/96
(...)
How does a man show he’s planning for the future?
He buys two cases of beer instead of one.   
         
Google Groups: bit.listserv.travel-l
Offensive Post to Travel-L!
David B. Cable
3/28/97
(...)
> >How does a man show he’s planning for the future?
> >    He buys two cases of beer instead of one.
 
Google Books
Unbelievably Gross Jokes, Volume XXVII
By Julius Alvin
New York, NY: Kensington Pub. Corp.
1998
Pg. 1:
How does a man show he’s planning for the future?
He buys two cases of beer instead of one.
 
21 May 1998, St. Louis (MO) Post-Dispatch, “Punch Lines Are Weapons in the War Between the Sexes” by Elaine Viets, pg, H7:
Q: How does a man show he’s planning for the future?
A: He buys two cases of beer instead of one.
   
Google Books
The Ultimate Book of Rude and Politically Incorrect Jokes
By Allan Pease
London, UK: Pavilion Books
2014
Pg. ?:
How can you be sure a man is planning for the future?
He buys two cases of beer instead of one.
       
Reddit—Jokes
How does a man show he’s planning for the future?
submitted January 12, 2015 by LucianFilm
He buys two cases of beer instead of one.
 
Google Books
Jokes: Have a Laugh and Improve Your English
By Adrian Wallwork
New York, NY: Springer
2018
Pg. 92:
How does a man show he’s planning for the future? He buys two cases of beer instead of one.
 
Twitter
Pam Taeuffer Author
@PamelaTaeuffer
How do you know a man is thinking about his future? He buys two cases of beer instead of one. Anonymous #quote
9:35 PM - 10 May 2018