Maisie Williams’ ‘Game of Thrones’ prank was so good that even she thought it was real [WATCH]

You know you’ve pulled off an excellent prank when you’ve fooled yourself.

Maisie Williams trolled us all on Monday’s “The Tonight Show Starring Jimmy Fallon” when she “accidentally spoiled” that Arya dies in the second episode of the eighth season of “Game of Thrones.” Of course, it was an April Fools’ Day joke, but the bit went on long enough and Williams was so entirely convincing in her feigned panic and horror — seriously, give her an Emmy for this — that even she forgot it was a prank for a hot second. And it’s all thanks to her trembling hands.

“People were like, ‘Wow, it’s really convincing because your hands were shaking,” Williams tells “Entertainment Tonight” (watch above).

“Yeah, your hands were shaking,” her co-star Sophie Turner concurs.

SEE Give Maisie Williams an Emmy for this incredibly convincing ‘Game of Thrones’ prank [WATCH]

Williams explains that she has “really bad anxiety,” so she usually doesn’t hold her hands still, or like right in front of her face like she did during the prank. “I always hold my hands like this [folded on my lap] or I move them, but I never hold them still because you can see that they shake,” she says. “So it was just like perfect that I would hold my hands up and they started shaking. I was like, ‘Oh, girl, you’re convincing yourself.'”

The prank was the show’s idea, according to Williams, and they did “a little rehearsal.” “And then it was just great,” she says.

The only thing that would make this joke better would be the ultimate plot twist: Arya actually dies in the second episode.

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