British duo Gavin Free and Daniel Gruchy, known on YouTube as "The Slow Mo Guys," are at it again.

In a YouTube video that was uploaded on Wednesday, the pair pour diesel fuel and other flammable liquids inside of an actual flamethrower.

Image source: YouTube

Then, living up to their name, the men show — via a slow motion video — what happens next. Watch and you'll quickly realize why the footage is going viral.

(H/T: Mashable)

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