“Math puns are the first sine of madness”

“Math puns are the first sine of madness” is a jocular line that has been printed on many gift items, such as posters, T-shirts and coffee mugs. “Mathematic puns are the first sine of madness”—“mathematic” is often given as “mathematical”—was cited in the newsgroup alt.humor.puns on March 8, 2004. “Math puns are the first sine of madness!” was cited on Twitter on July 9, 2007.
   
   
Google Groups: alt.fan.goons
Measuring the diameter of Harry Secombe,Peter Sellers and Spine Milligner all in one go!
Derek Wills
1/22/03
>Do it by Tri-Goon-ometry!
 
Ah, the first sine of madness (why? - cos I said so).
What acute observation, old chap.
   
Google Groups: alt.humor.puns
Puns of the Weak 03-08-04
Stan Kegel
3/8/04
(...)
Mathematic puns are the first sine of madness (Johann Von Haupkoph)
 
Twitter
Spiderkitten
‏@spiderkitten
@taterunino & @jacekantonelli: stop, stop! Math puns are the first sine of madness!
9:07 PM - 9 Jul 2007
 
Boktai Online
SCIENCE!
Deleted User
Feb 4 2008, 10:14 PM
(...)
Math puns are the first sine of madness.
 
Twitter
Nathan
‏@neito
Remember, people. Mathematic puns are the first sine of madness
9:18 PM - 28 Jul 2008
 
Google Books
The Final Frontier:
The Ovion Archives
By H. M. Irwing
Xlibris LLC (xlibris.com.au)
2013
Pg. 251:
Chapter 21
Mathematical Puns Are the First Sine of Madness.
 
reddit
Math puns are the first sine of madness. (imgur.com)
submitted July 26, 2013 by Honest_Bullshit
 
Conquer Maths
THE FIRST SINE OF MADNESS: THE WORLD OF A STAND-UP MATHEMATICAN
28th November 2014 - 12:55 pm
Stand Up Mathematician Matt Parker
As the person responsible for sourcing the World Wide Web for mathematical jokes and funny pics for you to enjoy every month, I have learnt a lot.
     
Google Books
Bad Science Jokes Jokes For Alkynes Of Scientists
By Melissa Miller
Lulu Publishing (Lulu.com)
2016
Pg. 62:
Math puns are the first sine of madness!