“I never run with scissors. Those last two words were unnecessary”

“I never run with scissors. Those last two words were unnecessary” is a jocular anti-running saying that has been printed on many images. Children are often told not to run while carrying scissors (advice to prevent an accident), but this shortened saying means “I never run.”
   
“I never run with scissors. Those last two words were unnecessary” was posted on Twitter by kevin BANNER on June 8, 2011. The joke went viral after it was posted on Twitter by Gordon om February 6, 2012.
 
   
Twitter     
kevin BANNER
@BannerComedy
I never run with scissors. Those last two words were unnecessary.
2:45 PM - 8 Jun 2011
     
Twitter
Gordon
@MisterBombay
I never run with scissors.
Those last two words were unnecessary.
7:02 PM - 6 Feb 2012
   
Twitter
Marco Williams
@MarcWilliams75
“@MisterBombay: I never run with scissors.
Those last two words were unnecessary.” - this is me to a T. Love this!
7:25 PM - 6 Feb 2012 from Caerphilly, Wales
 
Yahoo! Answers (June 19, 2012)
What is the meaning behind the saying, “I never run with scissors….. Those last two words were unnecessary.”?
Best Answer:  “I never run with scissors… those last two words were unnecesarry.” means “I never run” - by removing the last two words of the first part of the phrase.
It just means that they don’t run.
It’s not deep or will reveal the meaning of the universe or something. (:
   
Google Books
Average Joe to Speaking Pro
By Bill Haubrich
Cottontail Publishing
2012
Pg. 95:
I never run with scissors. Actually, those last two words were unnecessary.
     
Google Books
5,000 Sidesplitting Jokes and One-Liners
Compiled by Grant Tucker
New York, NY: Skyhorse Publishing
2013
Pg. ?:
I never run with scissors. Actually, those last two words were unnecessary.
 
Twitter   
Bill Murray
@BiIIMurray
I never run with scissors…those last two words were unnecessary.
11:14 PM - 11 Nov 2013
 
19 November 2013, The Advertiser (Adelaide, Australia), “The Last Word” by Marty Smith, pg. 18:
From the online pinboard Pinterest: “I never run with scissors. Those last two words were unnecessary.”
 
Twitter
Jack
@F_Divorce
I never run with scissors. (Those last two words were unnecessary.)
1:05 PM - 27 Jun 2018