“It cost me $500 to fly economy class. What a waste of money. I still know nothing about economics”

There’s a difference between “economy class” and “economics class.” “Me: What do you know about economics? My brother: Don’t they use that in the airplane? You know like the economy class” was posted on Twitter on June 26, 2012.
 
“It cost me $200 to fly economy class, and what a waste of money, I still know nothing about economics” was posted on Twitter on December 8, 2017.
 
     
Wikipedia: Economy class
Economy class, also called coach class, steerage, or standard class, is the lowest travel class of seating in air travel, rail travel, and sometimes ferry or maritime travel. Historically, this travel class has been called tourist class on ocean liners and third class, or even fourth class, on railways.
   
Twitter
Bea Santos‏
@beasantos
Me: What do you know about economics? My brother: Don’t they use that in the airplane? You know like the economy class.
7:50 AM - 26 Jun 2012
   
Twitter
Reuben Crisp‏
@reuben_crisp
It cost me $200 to fly economy class, and what a waste of money, I still know nothing about economics
8:18 AM - 8 Dec 2017
 
Reddit—Oneliners
It cost me $500 to fly economy class, and what a waste of money, I still know nothing about economics
submitted December 11, 2017 by 0xBA11
 
Twitter
JokeFarm‏
@_JokeFarm
It cost me $500 to fly economy class, and what a waste of money, I still know nothing about economics #joke #jokes
9:39 PM - 10 Dec 2017 (Posted after the above.—ed.)
 
Twitter
LOL Tweets™‏
@lolmgco
It cost me $500 to fly economy class, and what a waste of money, I still know nothing about economics
10:22 PM - 10 Dec 2017