“Why does cheese look sane?”/“Because everything else on the plate is crackers.”

A cheese riddle is:
   
Q: Why does cheese look sane?
A: Because everything else on the plate is crackers.
 
“Why does cheese look sane? Because everyone else on the plate is crackers” was posted on Facebook on February 23, 2011. “Tomorrows joke, today. Why did the cheese look sane? Cos everything else on the plate was crackers” was posted on Twitter on July 13, 2011.
   
             
Facebook
The Greatest Cheese Jokes In The World
February 23, 2011 ·
Why does cheese look sane?
Because everyone else on the plate is crackers.
 
Twitter
ben williams‏
@benmarkwill
Tomorrows joke, today. Why did the cheese look sane? Cos everything else on the plate was crackers.
1:11 PM - 13 Jul 2011
   
Twitter
Culture Magazine‏
@culturecheese
Q: Why did the cheese look sane? A: Everyone on the plate was crackers! Ex-intern Hazel strikes! http://ow.ly/5LJZp #joke
3:36 PM - 23 Jul 2011
   
Twitter
Wisconsinmade‏
@Wisconsinmade
I love cheesy jokes 😊 RT @culturecheese: Q: Why did the cheese look sane? A: Everyone on the plate was crackers! http://ow.ly/5LJZp
12:11 PM - 25 Jul 2011
 
Twitter 
Will Burton‏
@willburton22
@accessibleguide Why does cheese look sane?
Because everyone else on the plate is crackers.
4:17 AM - 28 Jul 2011
 
Twitter
Matt Leystra‏
@mleystra
Why does cheese look sane?
because everyone else on the plate is crackers. #cheesejokes #ehoh
9:53 PM - 4 Aug 2011 from Lambton, Ontario
 
Higgypop
Ultimate List of Cheese Jokes & Puns
MARCH 1, 2013 12:52 AM
(...)
Q: Why did the cheese look sane?
A: Because it was in between two crackers.
     
The Courtyard Dairy (UK)
Cheese jokes
16th December 2014
(...)
Why does cheese look sane?  Because everything else on the plate is crackers.
 
Google Books
Little Book of Cheese Jokes
By Jake Harris
Chichester, West Sussex: Summsersdale Publishers Ltd
2015
Pg. ?:
WHY DID THE CHEESE LOOK SANE?
BECAUSE THE REST OF THE PLATE WAS CRACKERS.
 
16 September 2016,

(London, UK), “On this Day” by Etan Smallman, pg. 23:
JOKE OF THE DAY
WHY does cheese look sane? Because everything else on the plate is crackers.
 
Puns Ville
Cheese Puns
avril 20, 2017
The funniest cheese puns ever.
(...)
Why does cheese look sane? Because everything else on the plate is crackers.