“What do ghosts eat for breakfast?”/“Scream of Wheat.”

A Halloween ghost pun on Cream of Wheat is:
 
Q: What do ghosts eat for breakfast?
A: Scream of Wheat.
 
The joke has been cited in print since at least 1980. “What do ghosts eat for breakfast?”/“Dreaded wheat” and “What do ghosts eat for breakfast?”/“Ghost Toasties” are a similar breakfast riddles.
 
“What do ghosts eat for lunch?”/“Boo-logna sandwiches,” “What do ghosts eat for lunch?”/“Spookghetti,” “What do ghosts eat for dinner?”/“Ghoulash” and “What do ghosts eat for dessert?”/“I scream” are related Halloween riddles.
     
   
Wikipedia: Cream of Wheat
“Cream of Wheat” is a brand of farina, a type of breakfast porridge mix made from wheat semolina. It looks similar to grits, but is smoother in texture since it is made with ground wheat kernels instead of ground corn. It was first manufactured in the United States in 1893 by wheat millers in Grand Forks, North Dakota. The product made its debut at the 1893 World’s Columbian Exposition in Chicago, Illinois. Before January 2007, Cream of Wheat was a Nabisco brand made by Kraft Foods. In January 2007, B&G Foods acquired the brand and all rights to market the cereal.[2] “Cream of Wheat” is a registered trademark.
       
17 February 1980 The Arizona Republic (Phoenix, AZ), “young comedians offer funny fare,” pg. D8, col. 3:
What do ghosts eat for breakfast?
Scream of Wheat.
Ramon Saunders, 8, third grade
Arrowhead Elementary School
       
27 October 1985, Sunday Boston Herald (Boston, MA), “Junior Whirl” by Hal Kaufman, comics sec., pg. ?:, col. 3:
What do monsters serve for breakfast? Scream of wheat.
 
25 March 1987, Hartford (CT) Courant, “Jumble” (puzzle) by Henri Arnold and Bob Lee, pg. B7 col. 4:
Answer: What do ghosts eat for breakfast—
SCREAM OF WHEAT
   
2 March 1998, Los Angeles (CA) Times, “Laugh Lines: Pint-Sized Punch Lines,” pg. 4:
What do ghost kids eat for breakfast? Scream of Wheat. (Jesie Marie St. Clair, 6, Fontana, Cypress Elementary)
 
Google Books
Halloween Hoots and Howls
By Joan Horton
Illustrated by JoAnn Adinolfi
New York, NY: Henry Holt
1999
Pg. ?:
What kind of breakfast does Frankenstein eat?
SCRAMBLED LEGS WITH GHOST TOASTIES AND HOT SCREAM OF WHEAT.
 
Google Groups: alt.humor.puns
Halloween Puns of the Weak 10/19/01
Stan Kegel
10/19/01
(...)
What does a ghost eat for breakfast??
Scream of wheat! (Joke of the Day) 
Ghost-Toasties (Gary Hallock)
 
Google Books
October 2002, Boys’ Life, “Think & Grin,” pg. 57, col. 1:
Matt: What do ghosts eat for breakfast?
Pat: What?
Matt: Scream of Wheat! — Matthew Whan, Reno, Nev.
 
Google Books
Spooky Sillies:
A Book of Ghost Jokes
By Mark Moore
Illustrated by Anne Haberstroh
Minneapolis, MN: Picture Window Books
2005
Pg. 17:
What do ghosts like for breakfast?
Scream of wheat.
 
Twitter
mannypahlooza
‏@mannypahlooza
what do ghost eat for breakfast? scream of wheat
3:25 AM - 11 Jun 2009
 
Google Books
Screaming with Laughter:
Jokes about Ghosts, Ghouls, Zombies, Dinosaurs, Bugs, and Other Scary Creatures
By Michael Dahl
Minneapolis, MN: Picture Window Books
2011
Pg. ?:
What do ghosts like for breakfast?
Scream of wheat.
 
Twitter
Albert Cole
‏@AlbertswagCole
Q: What do ghosts eat for breakfast on Halloween?
A: Shrouded Wheat. Ghost Toasties. Scream of Wheat. Terr-fried eggs. Rice Creepies!
1:09 PM - 15 Oct 2012
 
Google Books
Halloween Jokes and Riddles for Kids
By Christy Davis
Published by author
2013
Pg. ?:
What do monsters like to eat for breakfast?
*Scream of wheat.
 
Twitter
Organic Week
‏@organicweek
Happy #Halloween!
What do goblins eat for breakfast? Ghost Toasties, Scream of Wheat, and Brain Muffins.
HAHA! We’re here all day! 😉
7:45 AM - 31 Oct 2015
 
Twitter
alphys.
‏@ibuiltmettaton
What do ghosts eat for breakfast?
Ghost Toasties with booberries, Scream of Wheat, or Dreaded Wheat.
11:16 AM - 31 Jan 2016