“Why is the letter ‘C’ afraid of the rest of the alphabet?”/“All the other letters are Not-Cs.”

“Nazi” sounds like “Not-C.” A riddle is:
 
Q: Why is the letter “C” afraid of the rest of the alphabet?
A: All the other letters are Not-Cs.
 
The joke was posted on Reddit—3amjokes on August 23, 2013.
 
   
Reddit—3amjokes
Why is the letter “C” afraid of the rest of the alphabet? self.3amjokes
Submitted August 23, 2013 by FatherAndSun
Because all the other letters are Not-Cs
 
Twitter
Martin Becker
@martinbckr
Why is C afraid of all the other letters of the alphabet? Because all the other letters are not-Cs.
6:59 PM - 22 Aug 2013 (Posted after the above.—ed.)
     
Twitter 
Gerry
@ger_the_bear
Why is the letter C afraid of the rest of the alphabet??
Because all the other letters are Not-Cs
9:49 PM - 22 Aug 2013
   
Twitter
Trevor Hannah
@Trevor_Hannah
Why is the letter “C” afraid of the rest of the alphabet? Because all the other letters are Not-Cs
10:32 AM - 23 Aug 2013
   
Twitter
gin eyre
@hulklogan96
Dude, like, why are Cs afraid of every other letter of the alphabet?
Because all other letters are not Cs
3:41 PM - 25 Nov 2013
 
Reddit—3amjokes
Why was C afraid of all the other letters? self.3amjokes
Submitted February 6, 2015 by thekinzs
They were Not-Cs.
   
Reddit—Dad Jokes
Why is the letter “C” afraid of the rest of the alphabet? (self.dadjokes)
submitted January 27, 2018 by Alfie_13
Because all the other letters are Not-Cs
 
Reddit—Dad Jokes
Why is the letter “C” afraid of the rest of the alphabet? (self.dadjokes)
submitted September 23, 2018 by keithasaurus
Because all the other letters are Not-Cs