“What do race horses eat?”/“Fast food.”

A “fast food” riddle is:
 
Q: What do race horses eat?
A: Fast food.
 
“Whast kinds of food does race horses eat? FAST FOOD! 😊 #cheesyjoke” was posted on Twitter by Arlynne Kayla on January 25, 2011.
 
     
Twitter
Arlynne Kayla
@arlynnekayla
Whast kinds of food does race horses eat? FAST FOOD! 😊 #cheesyjoke
8:01 PM - 25 Jan 2011
   
Twitter
Mn9oor
@Mn9oor
Lol ☺ RT @khalifaF: What kind of food do race horses eat? ..........fast food ☺
5:04 AM - 16 Oct 2011
   
Twitter
Champ
@adnastyyy
what kind of food do race horses eat .....
Fast food
11:16 PM - 28 Mar 2012
   
Twitter
Ramez.  🌐
@RS4Ram
The type of food that race horses eat is fast food!
10:44 PM - 19 Jun 2012
 
Facebook
Horse People Quotes
January 7, 2013 ·
Horse joke!
 
What do race horses eat?
Fast food!  😉
   
Google Books
Fast Food Jokes For Kids
By Jack Jokes
PeteyRF Creative
2016
Pg. ?:
What do race horses eat?
Fast Food.
 
1 August 2016, The Gold Coast Bulletin (Southport, Queensland), “To all the neigh-sayers ... happy birthday” by Alison Marks, pg. 7:
WHAT do race horses eat? Fast food.
     
Twitter
Lone Star Park
@lonestarpark
Q:  What do racehorses eat?
A:  Fast Food
#NationalTellAJokeDay
3:25 PM - 16 Aug 2017
 
Twitter
Pearl of Peace
@PearlofPeace1
What do race horses eat? Fast food😉 It’s Tell An Old Joke Day! Haha, leave your jokes down below!🔽
#PearlOfPeace #TellAnOldJokeDay — feeling funny
8:00 AM - 24 Jul 2018