“Why do potatoes make good detectives?”/“Because they keep their eyes peeled.”

A potato riddle is:
 
Q: Why do potatoes make great detectives?
A: Because they keep their eyes peeled!
   
The popular potato riddle for children has been cited in print since at least 1995.
 
   
Newspapers.com
23 June 1995, Alexandria (LA) Daily Town Talk, “Mighty Funny’s Mini Jokes,” The Mini Page 4, col. 2:
WHY DO POTATOES MAKE GOOD DETECTIVES?
THEY KEEP THEIR EYES PEELED!
 
Google Groups: novell.community.chat
This one reflects my headache
fel…@hotp
1/11/02
Why do potatoes make good detectives?
Because they keep their eyes peeled.
 
Google Groups: alt.humor.puns
Kids Puns of the Weak 09-08-04
Stan Kegel
9/8/04
(...)
Why do potatoes make good detectives?
Because they keep their eyes peeled. (Lori Ross)
     
Twitter
Jason’s Deli
@jasonsdeli
Q:  Why do potatoes make great detectives?
A:  Because they keep their eyes peeled!
4:19 PM · Dec 11, 2008·Twitter Web Client
   
Google Books
I Love God’s Green Earth:
Devotions for Kids Who Want to Take Care of God’s Creation
By Michael Carroll and Caroline Carroll
Carol Stream, IL: Tyndale House Publishers
2010
Pg. 3:
Q: Why do potatoes make good detectives?
A: Because they keep their eyes peeled.
     
Google Books
A Man Walks Into a Bar 3
By Jonathan Swan
London, UK: Ebury Press
2010
Pg. 158:
Why do potatoes make good detectives?
Because they keep their eyes peeled.
 
Twitter
Lorraine Jo King
@lahlahbean
#sillysaturday
Why do potatoes make good detectives? Because they keep their eyes peeled.
4:20 AM · Feb 8, 2020·Crowdfire App
 
Reddit—Cleanjokes
Posted by u/homieBucky June 16, 2020
Why do potatoes make great crime fighters?
Because they always keep their eyes peeled.