I did 9/11

Alright listen up, nimrod. The "joke" here is that the person is claiming they were responsible for the 9/11 attacks, which is obviously a terrible tragedy. The "proof" is a link to a video, probably some dumb meme. I bet you didn't even know that the 9/11 attacks were a series of four coordinated terrorist attacks by the Islamic terrorist group al-Qaeda against the United States on the morning of September 11, 2001. Now, go back to watching your cartoons.