“The bag that breaks is the one with the eggs”

“The bag that breaks is the one with the eggs” is a saying that has been popularized by Arthur Bloch, the compiler of the “Murphy’s Laws” books. Bloch wrote in 1983 newspapers that this was “Woodside’s Grocery Principle.”
 
“The grocery bag that breaks is always the one with the eggs in it” is another version of the saying that was printed in Another Treasury of Clean Jokes (1983) by Tal D. Bonham.
 
       
Google Books
Another Treasury of Clean Jokes
By Tal D. Bonham
Nashville, TN: Broadman Press
1983  
Pg. 150:
The grocery bag that breaks is always the one with the eggs in it.
 
18 September 1983, Arizona Republic (Phoenix, AZ), “Murphy’s Laws and Then Some” compiled by Arthur Bloch, Arizona magazine, pg. 2, col. 1:
WOODSIDE’S GROCERY PRINCIPLE
The bag that breaks is the one with the eggs.
 
10 March 1985, Akron (OH) Beacon Journal, “Rules To Explain Why Life Drives You Crazy” compiled by Arthur Bloch, Beacon magazine, pg. 10, col. 4:
Woodside’s Grocery Principle
The bag that breaks is the one with the eggs.
   
Google Books
The Complete Murphy’s Law:
A Definitive Collection
By Arthur Bloch
Los Angeles, CA: Price Stern Sloan
1990
Pg. 220:
WOODSIDE’S GROCERY PRINCIPLE: The bag that breaks is the one with the eggs.

Google Groups: rec.humor.funny
More of Murphy’s Laws
Michael J. Irvin, WSU, 509/335-0437
3/20/91
(...)
The bag that breaks is the one with the eggs.
 
27 May 2001, Houston (TX) Chronicle, “Rare bookstore closes chapter” by Leon Hale, pg. A37:
One sign I like: “The grocery bag hat breaks is the one that contains the eggs.”
 
Google Groups: de.comm.software.mozilla
[Mail] Neue Nachricht - Sound ändern
Hans-Peter Weecks
12/13/02
(...)
The grocery bag that breaks has the eggs in it.
 
Twitter
Random Password‏
@randompassword
eiD;e3ei #password - The bag that breaks has the eggs.
—Woodside’s Grocery Principle
4:44 AM - 28 May 2009
   
Google Books
The Mammoth Book of One-Liners
Edited by Geoff Tibballs
London, UK: Constable & Robinson Ltd
2012
Pg. ?:
The shopping bag that breaks is the one with the eggs.