The International Spy Museum in Washington, D.C. really is a pretty neat place to spend a few hours. One current exhibit, which is all about five decades worth of James Bond villains, features a pretty realistic-looking shark tank.
Is it a real shark tank? The grandchildren in this video, which has gone globally viral, seem confident about the answer to that question. The slightly befuddled but impressively game grandmother who stars in the video has no idea.
Watch what happens: