U.S. President John F. Kennedy was assassinated on November 22, 1963. People who were alive at that time usually recall where they were when they first heard the news.
 
A joke involves people who were not alive at that time. “JFK was assassinated on this day I’m history. I remember right where I was when I heard about it…. history class most likely” was posted on Twitter by Adam Baxter on November 22, 2010. “Brillianto! RT @clarkekant I will never forget where I was when I heard the news that JFK was shot. (8th grade history class)” was posted on Twitter by Sambha on July 21, 2011.
 
“Dad: Son, I’ll never forget where I was when I heard the news that JFK was shot. It was my sixth grade American history class” was posted on Reddit—Dad Jokes on July 19, 2018. “I will never forget where I was when I heard the news that JFK was shot. In my seventh grade history class” was posted on Reddit—3amjokes on August 20, 2018.
 
     
Wikipedia: John F. Kennedy
John Fitzgerald Kennedy (May 29, 1917 – November 22, 1963), commonly referred to by his initials JFK, was an American politician who served as the 35th President of the United States from January 1961 until his assassination in November 1963.
         
Twitter
Adam Baxter
@AdamBaxter
JFK was assassinated on this day I’m history. I remember right where I was when I heard about it…. history class most likely.
1:02 PM - 22 Nov 2010
   
Twitter
Sambha
@sambha_bhilane
Brillianto! RT @clarkekant I will never forget where I was when I heard the news that JFK was shot. (8th grade history class)
2:28 AM - 21 Jul 2011
   
Twitter
HUMANEtheArtist
@SterlStopRappin
I will never forget where I was when I heard the news that JFK was shot. (8th grade history class)
11:28 AM - 21 Jul 2011
 
Twitter
Eli Braden
@EliBraden
#IllNeverForget where I was when I found out JFK was shot (in history class, mid-1980s)
4:52 PM - 19 Oct 2012
   
Twitter
nate
@Not_Nate_
I’ll never forget where I was when I heard JFK was shot.
In history class in 6th grade.
8:54 PM - 30 Dec 2013
   
Twitter
jordan
@jordan_stratton
Like many Americans, I remember exactly where I was when I heard JFK was shot. It was history class. And my teacher just kinda mentioned it.
10:26 PM - 21 Jan 2015
 
Reddit—Dad Jokes
Dad: Son, I’ll never forget where I was when I heard the news that JFK was shot. (self.dadjokes)
submitted July 19, 2018 by porichoygupto
It was my sixth grade American history class.
 
Reddit—3amjokes
I will never forget where I was when I heard the news that JFK was shot. self.3amjokes
Submitted August 20, 2018 by porichoygupto
In my seventh grade history class.