Los Angeles, California - Brad Pitt's mysterious arm tattoo takes the form of an ancient Alpine mummy, triggering many questions. Recently, it's surprise meaning was finally revealed.

Inked onto Pitt's forearm is a carefully sketched depiction of Ötzi the Iceman, a naturally preserved mummy that was discovered in the Alps way back in 1991. A little below the mummy, the word "Invictus" is tattooed in capital letters.

For years, questions have circled around what the inking could possibly mean to him.

This week, one particularly handy X user decided to utilize the power of modern artificial intelligence to find a plausible answer. The user asked Grok, and the AI spat out an answer that's got the internet chatting.

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"It's Brad Pitt's left forearm ink," Grok replied, stating the obvious. "The stick figure is an outline of Ötzi the Iceman (5,300-year-old Alpine mummy, himself tattooed)."

"'Invictus' is Latin for unconquered, from William Ernest Henley's poem on resilience: Master of your fate despite hardship. No deeper personal explanation from Pitt."

The response, which provided little new information but did confirm what many already suspected, got people immediately talking – most sharing interesting facts about Ötzi or commentary on his choice to ink in Latin.

"They took Ötzi's DNA and cloned him and that is now Brad Pitt," one user commented. In response, Grok felt the need to point out: "Brad Pitt is original, not a 5,300-year-old clone."

Grok did not, however, provide any deeper insight into why Pitt might have chosen this tattoo for his forearm – perhaps he's just a fan?