Sylwester Wardega is known for his pranks and most of his videos have gone viral.

This time, the Polish prankster new trick is to scare people with a giant spider!

How he did it, he dressed his dog up as a giant spider and let it walk at night and filmed the terrified reactions of passersby.

According to NYdailynews, the prankster frigthened two girls who will supposedly enter the elevator. But after seeing a spider dog, they screamed and ran.

Another scenes shows a man running after spotting the "spider" in a subway. As you can see in the video, he was able to check the fake webs and the props before spider dog ran.

Youtube prankster along his group conceptualize a mutant giant spider-dog. Even if the video runs for only five minutes, it has already become viral as it shows "how fearsome that kind of creature can be, even if it is just a little doggy" said Yahoo.

Yahoo also added to their report that the video has earned nearly 4 million hits in one day. A tip from publication:

"If you happen to find yourself confronted by a giant mutant spider-dog in the chill of the night, don't run. A scratch behind the ears might be all you need to survive the gag."