Just in time for Halloween, this Chainsaw Massacre prank is scary good and downright hilarious. But be warned, the video contains VERY graphic material!

Watch as prankster Vitaly Zdorovetskiy teams up with fellow online star Nick Santonastasso to pull the ultimate Halloween prank. Santonastasso has Hanhart syndrome—a rare genetic disorder that can result in missing limbs—but instead of letting his condition get him down, he chooses to inspire others with his singing and sporting skills.

He's also quite the prankster—which makes the 17-year-old an easy fit to play the victim in this video for VitalyzedTV. It isn't Santonastasso's first rodeo, as he appeared in a viral video back in November 2013 as zombie who scared unsuspecting shoppers in a grocery store.

The video is a bit graphic, but watch as unsuspecting people literally run for their lives screaming when they stumble upon what looks like the scene of a bloody massacre. Make sure you watch the Behind The Scenes video to see how they pulled everything off.

This prank was definitely a success, clocking in nearly 3 million views in just one day.

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