NEW YORK, NY - MAY 07: Elon Musk and Grimes attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Theo Wargo/Getty Images for Huffington Post)

Elon Musk and Grimes (real name: Claire Elise Boucher) have welcomed a baby boy. The engineer and technology entrepreneur continuously updated his Twitter followers about the progress of Grimes’ labor with tweets like “A few hours away,” “Mom and baby all good,” and “boy” when asked what the sex of the baby is. He even posted a playful photo of the baby, adding tattoos to his face.

When a fan asked what he and the Canadian singer named their child, Elon answered, “X Æ A-12 Musk.” According to Heavy, that name could be a number of things. “One of the theories is that the boy’s actual name is X Ash Archangel and Musk posted it in code.” They add, “In linguistics, Æ is known as a ligature, which combines two characters. This one means ‘ash,’ which could be a hint at the boy’s name.” Musk has not confirmed this, but liked a post about the theory on Twitter.

The outlet also states that the name means something else entirely. “Others believe that A-12 references the aircraft Lockheed A-12, which is known by its nickname ‘Archangel.'”

Regardless of what the name means, Twitter is having an absolute field day with this one. Enjoy the tweets below.