“School was great! We made explosives” (joke)

A school joke was posted on Twitter on December 29, 2011:
   
-  Mommy, Mommy, today in school we made explosives
- Ah well ... And what you’ll tomorrow in school?
- What school?
     
The joke has been printed on several images.
 
       
Twitter
laura sofia‏
@laurasofiagzz
-  Mommy, Mommy, today in school we made explosives
- Ah well ... And what you’ll tomorrow in school?
- What school?
9:12 PM - 29 Dec 2011
     
Twitter
Yinka‏
@TalabiEmma
After school: “Dad, we have Made explosives today” -“good, And what will u do in school tomorrow?” -“What School? “
9:21 AM - 22 May 2015
 
Twitter
KIWI‏
@niallsseatbelt
@NiallOfficial “How was school today, son?
“It was great mum! We made explosives!
“And what will u do at school tomorrow?
“What school?
8:21 AM - 14 Feb 2016
 
Reddit—Jokes
**Mother, “How was school today, Patrick?”**
submitted March 9, 2016 by [deleted]
Patrick, “It was really great mum! Today we made explosives!”
Mother, “Ooh, they do very fancy stuff with you these days. And what will you do at school tomorrow?”
Patrick, “What school?”
 
Reddit—Jokes
Today we made explosives!
submitted June 1, 2016 by jacqueline-steinert
Mother, “How was school today, Patrick?”
Patrick, “It was really great mum! Today we made explosives!”
Mother, “Ooh, they do very fancy stuff with you these days. And what will you do at school tomorrow?”
Patrick, “What school?”
     
Reddit—Jokes
Explosives
submitted March 29, 2017 by lordraz0r
Mother: “How was school today, Bobby?”
Bobby: “It was really great mum! Today we made explosives!”
Mother: “Ooh, they do very fancy stuff with you these days. And what will you do at school tomorrow?”
Bobby: “What school?”
   
Healthy Life Hacks
Top 10 Jokes Of The Week
July 16, 2017 James
(...)
Mother: “How was school today, Patrick?”
Patrick: “It was really great mum! Today we made explosives!”
Mother: “Ooh, they do very fancy stuff with you these days. And what will you do at school tomorrow?”
Patrick: “What school?”
   
Reddit—Jokes
Mother: “How was school today, Patrick?”
submitted August 29, 2017 by crash100200
Patrick: “It was really great mum! Today we made explosives!”
Mother: “Ooh, they do very fancy stuff with you these days. And what will you do at school tomorrow?”
Patrick: “What school?”