Girl Scout Cookies are sometimes joked to be “Ghoul Scout Cookies,” especially around Halloween. “Ghoul Scout Cookies” was cited in print in 1963 and there’s a riddle:
 
Q: Who do monsters buy their cookies from?
A: The Ghoul Scouts.
 
“Q: What’s a monster’s favorite after-school snack? A: Ghoul Scout cookies” was published in the Chicago (IL) Tribune on October 27, 1991. “Who do monsters buy their cookies from? The Ghoul Scouts” was published in Boys’ Life magazine in July 1997.
   
   
Wikipedia: Girl Scout Cookies
Girl Scout Cookies are cookies sold by Girl Scouts of the USA (GSUSA) as one of its major fundraisers for local Scout units. Members of the GSUSA have been selling cookies since 1917 to raise funds. Girls who participate can earn prizes for their efforts. There are also troop incentives if the troop as a whole does well. As of 2007, sales were estimated at about 200 million boxes per year.
 
7 April 1963, Akron (OH) Beacon Journal, “Like I Think Positive,” pg. 7F, col. 2:
Some fans have baked Ghoul Scout Cookies for Anderson.
(Of The Ghoulgateers.—ed.)
 
27 October 1991, Chicago (IL) Tribune, “Got It?.” pg. H9, col. 2:
Q: What’s a monster’s favorite after-school snack?
A: Ghoul Scout cookies.
Kim Otterson, Chicago
   
Google Books
July 1997, Boys’ Life, “Think & Grin,” pg. 70, col. 2:
Izzy: Who do monsters buy their cookies from?
Frizzy: Who?
Izzy: The Ghoul Scouts. — Sean Bucknam, Northridge, Calif.
 
Google Books
October 1997, Boys’ Life “Think & Grin,” pg. 74, col. 2:
Pete: Who do monsters buy their cookies from?
Rick: Who?
Pete: The Ghoul Scouts. — Tyrese Watson, Chicago, Ill.
 
19 April 1999, Los Angeles (CA) Times, “The Kids’ Reading Room; Reading by 9; Pint-Sized Punch Lines,” pg. 7:
What do monsters like to snack on? Ghoul Scout cookies! (Neda, 9, Malibu, Webster Elementary)
   
Google Groups: alt.humor.puns
“Puns of the Weak” 10/20/00
Stan Kegel
10/21/00
(...)
Who knocks on your door selling Halloween cookies? Ghoul Scouts (Ken Pinkham)
 
Google Books
The Little Giant Book of Giggles
By Charles Keller
Illustrated by Jeff Sinclair, Dave Winter and Dave Garbot
New York, NY: Sterling Publishing Company, Inc.
2003
Pg. 248:
Where do monsters buy their cookies?
From the Ghoul Scouts.
 
Google Books
Spooky Creature Riddles
By Janet Nuzum Myers
Illustrated by Bob Ostrom
New York, NY: Sterling Publishing Company, Inc.
2005
Pg. 47:
Who provided cookies at the Halloween party?
The Ghoul Scouts.
     
Twitter
Liam Finley
‏@liam_finley27
@VesceVesh Lmfao Who do the monsters buy their cookies from? The
ghoul Scouts lmfao!!!
8:21 PM - 8 Oct 2012
 
Twitter
DaisiesforDaisy
‏@DaisiesforDaisy
Whom do monsters buy their cookies from? The Ghoul Scouts. http://ow.ly/eEdT8  via http://boyslife.com // cc @JLowBirthplace
4:12 PM - 21 Oct 2012
 
Psychology Today
Toni Bernhard J.D.
Turning Straw Into Gold
Halloween Riddles and Ridiculous-Looking Pumpkins!
Enjoy these Halloween riddles and silly pumpkins!
Posted Oct 26, 2013
(...)
Q. Who do vampires buy their cookies from?
A. The Ghoul Scouts.
   
GOogle Books
Halloween Jokes For Kids
By Peter Crumpton
PeteyRF Creative
2015
Pg. ?:
Whom do monsters buy their cookies from?
The Ghoul Scouts.
 
(Trademark)
Word Mark GHOUL SCOUTS
Goods and Services (ABANDONED) IC 041. US 100 101 107. G & S: Entertainment services, namely, providing ongoing children’s programs and cartoons broadcast over television, satellite and online
Standard Characters Claimed
Mark Drawing Code (4) STANDARD CHARACTER MARK
Serial Number 85779354
Filing Date November 14, 2012
Current Basis 1B
Original Filing Basis 1B
Published for Opposition June 10, 2014
Owner (APPLICANT) DANEBOE PRODUCTIONS, INC. CORPORATION CALIFORNIA 450 NORTH ROXBURY DRIVE, 8TH FLOOR BEVERLY HILLS CALIFORNIA 90210
Attorney of Record JEFFREY R. COHEN
Type of Mark SERVICE MARK
Register PRINCIPAL
Live/Dead Indicator DEAD
Abandonment Date October 30, 2014