“Why did the cactus cross the road?”/“It was stuck to the chicken.”

“Why did the chicken cross the road?”/“To get to the other side” is a classic riddle from the 19th century. A cactus version is:
     
Q: Why did the cactus cross the road?
A: It was stuck to the chicken.
 
The joke was printed in Newsday (Long Island, NY) in 1990 and has been printed on several images.
     
             
23 September 1990, Newsday (Long Island, NY), “Smiles,” Kidsday, pg. ?:
Why did the cactus cross the road?
It was stuck to the chicken. - Brendan McGinn, Sound Beach
   
Google Groups: bit.listserv.catholic
BACCHIOCCHI REPLIES TO CARSON
Energo Ed
2/13/96
>Why did the cactus cross the road?
>
>Mike Melendez
 
Because it was stuck to the chicken.
 
Google Books
Best Riddle Book Ever
By Charles Keller
New York, NY: Sterling Publishing Company, Inc.
1998
Pg. 36:
Why did the cactus cross the road?
It was stuck to the chicken.
   
Google Books
Just Jokes a Collection of Kids Jokes
By Phyllis Agles-Johnson
Raleigh, NC: LULU Publishing
2010
Pp. 67-68:
Q. Why did the cactus cross the road?
A: Because he was stuck to the chicken’s back!
 
Reddit—Jokes
Why did the cactus cross the road?
submitted June 3, 2013 by Kjostid
It got stuck to the chicken.
   
Facebook
‎Emma Marvil‎ to Carl The Cactus
August 4, 2014 ·
Q. Why did the cactus cross the road?
A. He was stuck to the chicken!
 
Twitter
Laffy Taffy Jokes‏
@Laffy_TaffyJoke
Replying to @_paulastraus
“Why did the cactus cross the road?
It was stuck on the chickens back.”
@p_straus
10:29 PM - 12 Jul 2015
 
Reddit—Jokes
Why did the cactus cross the road?
submitted October 16, 2017 by TheXypris
Because it was stuck on the chicken