FANS are in limb-o waiting for an answer - as a clip seemed to show Luke Humphries' girlfriend embracing his world title glory with FOUR arms.
Kayley Jones burst into tears after Humphries beat darts whizkid Luke Littler 7-4 in a stunning all-English final at the Ally Pally.
And when the world No1 went over for a victory hug, some viewers reckon Kayley responded with her own version of a double top - in the form of two pairs of upper limbs.
First, one pair of arms came out across the back of Humphries - then another went round his neck in an equally-gripping gesture.
But as the couple enwrapped in a multitude of hands, fans embraced something else - the mystery of Kayley's extra arms.
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A keen-eyed enthusiast posted a clip of the scene with the words: "Cannot believe his missus has four arms."
Another viewer found a major consolation in the predicament as he argued: "Four armed is forewarned."
A third observer wondered of the limb overload: "Not sure if that’s a good or bad thing tbh."
But a fourth fan noted a potential advantage for playing darts: "She would be a handy player. Switching from 20s to 19s."
However, one cynical viewer - who presumably doesn't even believe in Santa Claus - then went out on a limb with an alternative answer to the puzzle.
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He claimed of the second pair of arms: "I think it's another person."
The man who posted the clip responded: "Shhhhhh."
That was a bit like the way Humphries himself silenced the fans who booed him - before his scintillating success against 16-year-old Littler was saluted by all.