The moment a grandmother is pranked into thinking she's about to be attacked by a shark has been caught on camera.
The woman's grandchildren can be heard giggling in the background as they urge her to touch the glass of the 'aquarium'.
They are heard saying: "Touch it. C'mon touch it. Keep touching", reports CBS6 News.
According to the Daily Mail, the woman is apparently unaware the tank is a virtual aquarium, part of an exhibit called Exquisitely Evil: 50 Years of Bond Villains, at the International Spy Museum.
The museum features the shark attack video as part of its display, but the grandma looks at the camera a little bewildered.
She does as the kids tell her and taps on the glass, before the shark turns and 'attacks' with its jaws open, cracking the glass.
The woman is so shocked she hurtles backwards and falls to the floor. But she does see the funny side and is laughing as she's helped up.
To make matters worse, she switched off the GPS locator on her mobile phone so that she couldn't be tracked.
TheDaily Mail reports that, in reality, Samantha Busch was standing safely on a ledge while her boyfriend took the photograph - which has since gone viral after being posted on Reddit with the headline, "Mom was worried about my trip to the Grand Canyon, I sent her this picture."
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