Used as a verb. To destroy something with the force of two Boeing 747's crashing into the country's two biggest skyscrapers.
B: Yo, I saw that bitch-slut girlfriend of yours cheating on you with Rolfo at the National Dry-humping/Freaking Dancer's Association of Long Island Formal.
C: STFU!!! I'm totally gonna nine-eleven her face!!
M: Yo, dude, I got totally wasted last night and I totally nine-elevened my car into a mailbox!
Y: Oh snap!
Like a Bakers Dozen for eleven things instead of thirteen.
Adding one more to a 12 makes it a bakers dozen. Adding one more to 10 makes it a Giuliani 9/11.
Well, we thought Lady was just going to have 10 puppies but there was one more to make it a Giuliani Nine-Eleven.