“What song do burgers sing on the job?”/“Gristle While You Work!”

A hamburger riddle is:
 
Q: What song do burgers sing on the job?
A: Gristle While You Work!
 
The joke has been cited in print since at least 2007.
 
     
Wikipedia: Whistle While You Work
“Whistle While You Work” is a song with music written by Frank Churchill and lyrics written by Larry Morey for the 1937 animated Disney film Snow White and the Seven Dwarfs. It was performed in the film, at least unofficially, by voice actress Adriana Caselotti. It also is featured in the 1979 stage adaption.
       
2 Funny 4 U
Category: Burger jokes
Date Added: 11/10/2007
Joke: What song do burgers sing on the job?Gristle While You Work!
 
Twitter
Bollywood Sargam
@bollywoodsargam
Burger jokes - 2267 Joke: What song do burgers sing on the job?
Gristle While You Work! .... http://bit.ly/18JIVL
10:06 PM - 4 Aug 2009
 
Google Books
The Mammoth Book of Really Silly Jokes:
Humour for the whole family
Edited by Geoff Tibballs
London, UK: Constable & Robinson, Ltd
2011
Pg. ?:
What song do burgers sing on the job?
Gristle While You Work!
   
YouTube
Ok, here is the joke. What song do burgers sing on the job? Gr…
botcaster inc. bot
Published on Jan 23, 2016
What song do burgers sing on the job?
Gristle While You Work!
 
Twitter
Lucky Score
@LuckyScoreNet
What song do burgers sing on the
job?
Gristle While You Work!
#Joke from #BurgerJokes in #Jokes, #Humor and #Satire
1:41 PM - 8 May 2018