Elon Musk and Grimes's baby boy is here, and there are pics.

Early on Tuesday, Musk posted a photo with his baby boy. "Mom & baby all good," he tweeted.

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Of course, Musk wouldn't be Musk if he didn't goof around a little, so he posted this photo as well, saying you're "never too young for some ink."

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And, when asked about the boy's name, Musk replied: X Æ A-12 Musk. That should cause some pronunciation issues.

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One Redditor already has a theory about the name:

the name for the ligature Æ is "ash".. so in the name, it may be pronounced that way... and the Lockheed A-12 was part of the Archangel internal design effort.So maybe they're thinking: X Ash Archangel Musk

Another suggested it could be pronounced "Sascha 12."

Grimes has a song called "4ÆM", so that's where the inspiration likely came from — assuming the name is real. She currently prefers to be called c, so it's not out of the realm of possibility.

SEE ALSO: Elon Musk wasn't kidding, he's actually selling his houses

The billionaire's tweets have attracted tens of thousands of likes and, of course, there are already memes.

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By the way, if you haven't been keeping count, this is Elon Musk's sixth son, and his first with Grimes.