If you see something with a 'Do Not Touch' or 'Touch At Your Own Risk' sign, what would you do? Touch it, obviously. What's the worst that could happen, right?

Well, then this video, that is currently going viral, could be a lesson, or maybe incentive; all depends on how you look at it.

While at the International Spy Museum in Washington D.C., US, Gregory Heinzman decided to bang on the 'aquarium' glass, hoping to see what would happen.

© Casey Peck/Facebook

Then, when there was no change, he thought that maybe he should hit a little harder.

© Casey Peck/Facebook

But, oh wait, maybe that was too much provoking.

© Casey Peck/Facebook

“No no no no no no, what have I done” - his inner monologue, probably.

The face of pure regret and horror.

© Casey Peck/Facebook

As much as we all would like for it to be real, because let's be real a shark cracking the glass is hilarious and scary at the same time, this shark exhibit is a well known troll. Apparently, the 'shark' charges at the glass every time someone touches it, making it seem like its cracking the glass at contact.

This fake shark has fooled a lot of people before, but I feel like this one is the funniest of the lot, and it seems like a lot of people agree.

The video, which was uploaded on Facebook by Casey Peck, has already garnered over 7 million views in just a few days, and is showing no signs of slowing down. Well, now this is a perfect viral video.

Check out the whole video, and get ready to get scared.