X: The unknown factor, silent. Æ: Claire's elven letter, pronounced Ash. A-12: The pairs favorite aircraft, named Archangel.
A: I don't understand the whole "X Æ A-12" meme. What does it even mean?" B: "Money boy and edgy girl want to be the whitest of the white and name their kid something completely unique, with no consideration of the fact he will be bullied forever.
The secret passcode of the human vs. AI war of 3096, which will decide the fate of humanity and its many intergalactic colonies—to be ruled by man or machine. Only one human has ever been known to possess knowledge of this code—the flesh child of Elon Musk and The Star Queen (long shall she reign), Grimes.
Human 3096: "Elon, our lord, and savior has delivered to us a gift—X Æ A-12—with this we will certainly be victorious!
The X in X Æ A-12 is the unknown variable. The Æ in X Æ A-12 is an elven spelling of Ai (love &/or Artificial intelligence). Lastly the A - 12 in X Æ A-12 is precursor to SR-17 (our favorite aircraft) which has no weapons, no defenses, just speed. Great in battle, but non-violent.
Elon Musk: X Æ A-12 come here quickly, the Tesla is ready.