There are a lot of fan theories out there, but this one deserves a giant eye roll.
A YouTuber by the name of BarelyHuman11 posits in a 12-minute video that the 1985 film "Back to the Future" is coded with references to the 9/11 attacks, which took place 16 years later.
The theorist points to the film's Twin Pines mall where Christopher Lloyd's character is attacked by Libyan terrorists. Twin Pines is apparently supposed to be a reference to the Twin Towers.
What's more, according to the video, the attack takes place at 1:16 a.m -- and get this -- if you turn the sign upside down it reads "91: 1." Of course, there's no explanation as to why anyone would try to read it upside down.
"Is this only a coincidence?" asks the video's narrator.
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