Cereal in milk (often made for breakfast) has been compared to soup (often made for dinner).
   
“‘I love cereal. It’s like breakfast soup.’ -Eric Schumann” was posted on Twitter by Drew Dixon on September 28, 2009. “Cereal is like breakfast soup.” was posted on Twitter by Erik Bartlett on April 14, 2010. “Cereal is just Breakfast Soup” was posted on Twitter by Dem Disenfranchised Boyz on July 21, 2010. “Cereal is breakfast soup” was posted on Twitter by Joey Mimosa on March 29, 2011. “cereal is breakfast soup” was posted on Reddit—Showerthoughts on January 1, 2014.
 
“Soup is dinner cereal” is a related saying.
 
   
Twitter
Drew Dixon
@drewdixon
“I love cereal. It’s like breakfast soup.” -Eric Schumann
9:30 AM · Sep 26, 2009
 
Twitter
Erik Bartlett
@Bittertalker
Cereal is like breakfast soup.
11:44 AM · Apr 14, 2010
 
Twitter
Dem Disenfranchised Boyz
@ABrashGentleman
Cereal is just Breakfast Soup.
12:58 AM · Jul 21, 2010
 
Twitter
Jason Permenter
@jasonpermenter
Paralyzed with the thought that cereal is just cold “breakfast soup”.
12:18 PM · Nov 8, 2010
 
Twitter
Jasmine
‏@zednanref_zaaj8
Cereal is just breakfast soup
1:40 PM - 28 Dec 2010
 
Twitter
𝑛𝑦𝑜𝑜𝑚
@kaieous
Cereal is just breakfast soup.
1:03 AM · Jan 28, 2011
 
Twitter
Joey Mimosa
@JoeyMimosa
Cereal is breakfast soup
1:28 PM · Mar 29, 2011
 
Twitter
Evan Oliver
‏@musiciluv17
Amazing! He’s done it again; simple yet so true.. RT: @JoeFuller4 Cereal is breakfast soup
12:38 PM - 29 Mar 2011
 
Twitter
Mike Primavera
@primawesome
Cereal is breakfast soup.
9:04 AM · Jun 11, 2011
       
Reddit—Showerthoughts
Posted by u/pmunkyandpals October 7, 2013
Cereal is basically breakfast soup
   
Reddit—Showerthoughts   
Posted by u/[deleted] January 1, 2014
cereal is breakfast soup
 
Reddit—Showerthoughts
Posted by u/habsfan1112 January 2, 2014
Cereal is just breakfast soup
   
Reddit—Showerthoughts
Posted by u/Firefro626 September 29, 2014
Cereal is breakfast soup
 
Reddit—Showerthoughts
Posted by u/totalpenguin191 December 8, 2015
Is cereal just breakfast soup
 
BuzzFeed
Jun. 6, 2016, at 12:01 p.m.
27 Tweets About Breakfast That Will Make You Laugh Out Loud
“Toast is just soft bread that has been hurt before.”
Julia Reinstein
BuzzFeed Staff
(...)
25.
((Julia Reinstein)) ✔ @juliareinstein
Cereal is breakfast soup
4:46 PM - 19 Feb 2014
 
Reddit—Showerthoughts
Posted by u/dickforbrainz420 February 22, 2018
Is cereal breakfast soup?
 
Reddit—Showerthoughts
Posted by u/CoH_Zem September 18, 2021
Cereal is literally breakfast soup
   
Twitter
Hagai Palevsky (he/him)
@DialHForHagai
cereal is just breakfast soup. soup is just dinner cereal
4:11 PM · Oct 31, 2021
 
Reddit—Showerthoughts
Posted by u/cynicalromanticist November 16, 2021
Cereal is breakfast soup