“A rubber band was confiscated during algebra because it was a weapon of math disruption”

A pun on “weapon of mass destruction” is “weapon of math disruption,” as in a popular joke:
 
“A rubber band pistol was confiscated from algebra class because it was a weapon of math disruption.”
 
The joke has been cited in print since at least August 2008.
 
 
Google Groups: Deaf-Blind Inspirational Life Group
Fw: Punster alert…
Cynthia Groopman
8/23/08
(...)
4. A rubber band pistol was confiscated from algebra class because it was a weapon of math disruption.
   
Twitter
francine hardaway
‏@hardaway
A friend sent me a joke:A rubber band pistol was confiscated from algebra class because
it was a weapon of math disruption.
6:05 PM - 13 Sep 2008
 
Google Groups: rhodes22
[Rhodes22-list] Warning: Bad Puns
.(JavaScript must be enabled to view this email address)
9/25/08
(...)
4. A rubber band pistol was confiscated from algebra class because it was a weapon of math disruption.
   
Google Books
November 2009, Boys’ Life, “Think & Grin,” pg. 59, col. 1:
Jamie: My algebra teacher confiscated my rubber-band gun today.
Stewart: Why’d she do that?
Jamie: She said it was a “weapon of math disruption.”
Jamie Stewart, Kennewick, Wash.
 
Google Books
Double Dealing III:
The Pun

By Chuck Closson
Xlibris Corporation (Xlibris.com)
2013
Pg. 145:
In school a rubber band can be a weapon of Math disruption.
 
Google Books
Of Wit N Humour
By Vincent Thnay
Lulu Press, Inc, (Lulu.com)
2015
Pg. ?:
A rubber band pistol was confiscated from algebra class, because it was a weapon of math disruption.—Unknown
   
Google Books
Best Ever Classroom Jokes:
Because some of us never grow up

By Mike Haskins
New York, NY: Pavilion Books
2015
Pg. ?:
Did you hear about the maths teacher who confiscated a rubber-band gun from one of the pupils in his class?
He said it was a weapon of math disruption.
 
Twitter
Steve
‏@sinnfinden
did you hear about the guy that got his rubber band gun confiscated in geometry?
it was a weapon of math disruption
10:37 AM - 24 Mar 2016