Memes have become a rather popular way of distributing jokes about 9/11 . A lot of these memes play with or make fun of 9/11 conspiracy theories such as " Bush did 9/11 " or " jet fuel ca n't melt steel beams . " There have also been viral Vine videos that joke about fictional characters or other famous people doing the attacks . In these vines , the creators have a clip of them , or something they throw , or perhaps an aircraft they fly , and then cut to footage of the planes hitting the Twin Towers ( mostly Flight 175 hitting the South Tower ) . This makes fun of that character or real person , saying " ( blank ) did 9/11
Flight 175
United Airlines Flight 175
Humor based on the September 11 attacks