A skater set fire to his friend as the pair attempted a silly stunt in America. 

Dave Krienke and Mike Vasilik were filming a skateboard stunt in New Jersey when it all went dramatically wrong, reports the Daily Mail. 

'We decided to light each other on fire with gas while we were out skating. Our plan took a left turn,' Dave said. 

In the video, one guy pours petrol down a large boulder but he also spills the flammable fluid down the skater’s very baggy trousers.

They seem entirely unperturbed by the fact that he is now doused in petrol and the friend enthusiastically lights the stream of fluid running down the boulder which ignites in a fire path.

But bizarrely he then lights his friend who is suddenly engulfed in hungry flames.

The burning skater throws himself onto the grass as he tries to jump out of his flaming trousers.

He jumps about desperately as his very hot pants hang around his ankles, still burning.

His accomplice runs after him and tries to pull them off as the man kicks out viciously, trying to free himself from the torturous flames.

He somersaults into his friend who then sits on the man’s burning legs, presumably trying to cut off the oxygen supply.

‘It burns so bad,’ he shouts as the flames continue to devour his trousers.

After the flames have burned off, the men show their self-inflicted wounds to their friends who can be heard laughing hysterically at their friends' misfortune.

‘The skin's peeling off,' Dave says as he shows his red-raw legs to the camera.