“Why did the horseman put a saddle on a large loaf of bread?”/“It was a crusty steed.”

A trusty steed shouldn’t be confused with a “crusty” steed. A riddle is:
 
Q: Why did the horseman put a saddle on a large loaf of bread?
A: It was a crusty steed!
   
A form of the joke has been cited in print since at least 1998.
 
         
Google Books
3650 Jokes, Puns, and Riddles
By Charles Foxgrover, Anne Kostick and Michael J. Pellowski
New York, NY: Black Dog & Leventhal Publishers, Inc.
1998
Pg. 129:
Man: Why do you have a saddle on that large loaf of bread?
Cowboy Joe: It’s my crusty steed.
   
funnyjoke.com.au
Category: Horse jokes
Date Added: 10/10/2007
Joke: Why did the horseman put a saddle on a large loaf of bread?It was a crusty steed!
 
Twitter 
Bollywood Sargam
@bollywoodsargam
Horse jokes - 5543 Joke: Why did the horseman put a saddle on a large loaf of bread? It was a crusty steed! .... http://bit.ly/pGglF
9:19 PM - 29 Aug 2009
   
Google Books
Sensible Nonsense.. Frank’s Comic Pack:
Humour Pack Series
By Frank Paul
BookBaby
2014
Pg. ?:
Why did the horseman put a saddle on a large loaf of bread?It was a crusty steed!
   
YouTUbe
Ok, here is the joke. Why did the horseman put a saddle on a l…
botcaster inc. bot
Published on Jan 23, 2016
Why did the horseman put a saddle on a large loaf of bread?
It was a crusty steed!
 
Twitter
lorraine Jo King
@LahLahBean
#badjokefriday
Why did the horseman put a saddle on a large loaf of bread?
It was a crusty steed!
11:15 PM - 19 Jul 2018