Jokes about the September 11, 2001 terrorist attacks on New York City’s World Trade Center are numerous, although not politically correct. One early joke is:
 
Q: What does “WTC” stand for?
A: What Trade Center?
   
“What does WTC Stand for?...What Trade Centre?” was posted to the newsgroup alt.usenet.legends.duab on September 11, 2001.
 
   
Wikipedia: World Trade Center (1973-2001)
The World Trade Center was a large complex of seven buildings in Lower Manhattan, New York City, United States. It featured landmark twin towers, which opened on April 4, 1973, and were destroyed in the September 11 attacks, with 7 World Trade Center collapsing later that day due to the damage it suffered when the twin towers collapsed that morning. The other buildings in the complex were severely damaged by the collapse of the twin towers, and their ruins were eventually demolished.
 
At the time of their completion, the “Twin Towers” — the original 1 World Trade Center, at 1,368 feet (417 m); and 2 World Trade Center, at 1,362 feet (415 m) — were the tallest buildings in the world.
 
Google Groups: alt.usenet.legends.duab
What was that fucking BANG?
Jocyber
9/11/01
(...)
> What does WTC Stand for?
>
> 1. Welcome To Canada
> 2. World Terrorist Convention
> 3. What Trade Centre?
 
Google Groups: no.kultur.humor
WTC
Fuzzy
9/12/01
Hva står WTC for?
World Trade Center ?
Welcome to Canada ?
World Terrorist Convetion ?
What? Trade Center ?
 
Google Groups: alt.tasteless.jokes
The latest in WTC jokes…...
AJ
9/17/01
Don’t bitch…... it’s alt.TASTELESS.jokes….....
World Trade Center / Pentagon Jokes
 
What does WTC stand for? -  “What Trade Center?”
 
Twitter
Stephen Watson
‏@WatsonTheScot
“WTC” in the trending topics. Stands for “What Trade Center?” (I am gonna get so much shit for this. haha)
8:04 AM - 11 Sep 2009
 
Twitter
Mason Buck
‏@masonbuckyall
WTC: What Trade Center?
7:52 PM - 28 Jan 2010
 
Google Books
Newslore:
Contemporary Folklore on the Internet
By Russell Frank
Jackson, MS: University Press of Mississippi
2011
Pg. 89:
Q: What does WTC stand for?
A: “What Trade Center?”
 
Twitter
Osama Bin Laden
‏@OsamaRealLaden
What does WTC stand for? – What Trade Center?
9:50 PM - 2 May 2011
 
Twitter
MISHA
‏@mishadasexy
RT @lil3ichmann: #newyorkquotes what does WTC stand for? What Trade Center< World Trade Center

http://myloc.me/kZ4U9
3:38 AM - 22 Jun 2011
Queens, NY