This week Elon Musk and Grimes (real name Claire Elise Boucher) have announced the birth of their son. The pair picked a rather unique name for the little one, calling him X Æ A-12.
Grimes shared an explanation for the interesting moniker on Twitter, writing: "X, the unknown variable, Æ, my elven spelling of Ai (love &/or Artificial intelligence)." She went on to say that the A-12 had two meanings.
The first-time mum added: "A-12 = precursor to SR-17 (our favorite aircraft). No weapons, no defenses, just speed. Great in battle, but non-violent." "A=Archangel, my favorite song." Interesting, right?!
And the pair aren't the first celebs to select an unusual name for their baby, we've heard many weird and wonderful ones over the years.
Read more on mirror.co.uk