Or insist that it actually happened on March Thirteenth, and when the C.H.U.D. gets confused, in the most condescending voice/manner possible that its not 9/11, its actually 911 day, named that because of how many people called 911 that day when the buildings exploded and in honor of how many first responders died “during the explosions” (make sure to use this exact phrasing as many times as you can, bonus points for saying “The Explodings” instead of “The Explosions”)
As someone who’s worked as a sysadmin, banning you for this would be an unbelievable level of shittiness of the parts of the admins, if anything you should be sending them a bill for your unpaid QA hours. I kid, I kid of course. But seriously, endusers are constantly doing stupid shit that breaks sites (And then do it again, and again, and again, after each time its fixed because “it didn’t work the first time” ) and never file a bug report or probably even know what a “bug report” is. I seriously probably woulda cried tears of joy if I came across someone not only giving a heads up of even “hey, this thing I tried to do didn’t work and now your site is broken”, but also being able to explain exactly what they were doing and how it caused it to break.