Cruelest joke EVER? Dad uses a dummy to prank his girlfriend into thinking their son has been blown up in a quad bike accident

  • YouTube star Roman Atwood set up cameras and enlisted the help of his young son Kane in stunt to scare the boy's mom Brittney Smith
  • While she is distracted, he switches the three-year-old boy for a fully-clothed dummy and positions it on a quad bike
  • When Brittney returns, the bike - which is secretly remote controlled - shoots off over a jump and explodes in a 30ft ball of fire 
  • The clip ends with a distraught Brittney being reunited with her son Kane
  • She tells her boyfriend 'I'm done' and kicks him 

A prankster father played a cruel trick on his girlfriend by pretending their son had been blown up in a quad-biking accident.

Comedian and YouTube star Roman Atwood enlisted the help of the young boy in the elaborate stunt to scare his girlfriend Brittney Smith - who ended distraught and in tears.

Footage of the clip, called Blowing up my kid PRANK!!!, has been viewed more than 2.5million times on YouTube in just 24 hours.

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In the footage, which has already got more than 8million views since being uploaded two days ago, Kane is apparently killed in a huge explosion while riding a quad-bike 

Roman Atwood holds back his girlfriend Brittney Smith as she tries to run into the 30ft fireball to save their son - who is in fact a dummy that Atwood has dressed in the boy's clothes

Atwood, 32, from Ohio, begins the prank by telling Smith - who has just arrived in the couple's car - that he and their son have been test-driving the quad-bike and really want to buy it.

He asks her to fetch their checkbook from their car so he can purchase it.

As soon as Smith's back is turned and she starts walking to the car, Atwood tells Kane to run and hide while he swaps the boy for a dummy.

The dummy is wearing the same helmet and clothes as Kane and looks just like him from behind. 

Atwood positions it on the bike so that when Smith returns with the checkbook, she sees the back of what she thinks is her son on the bike. 

Atwood is standing next to him. 

The 'boy' then revs up the bike and it shoots off with 'him' on board.

Atwood begins the prank by telling Smith - who has just arrived in the couple's car - that he and their son have been test-driving the quad-bike and really want to buy it

Atwood begins the prank by telling Smith - who has just arrived in the couple's car - that he and their son have been test-driving the quad-bike and really want to buy it

He then distracts his girlfriend by telling her to fetch their checkbook. As soon as she is out of sight, Atwood tells Kane, three, to run and hide (pictured)

He then distracts his girlfriend by telling her to fetch their checkbook. As soon as she is out of sight, Atwood tells Kane, three, to run and hide (pictured)

Atwood replaces his son on the quad bike with a child-sized dummy wearing the same clothes and a helmet

Atwood replaces his son on the quad bike with a child-sized dummy wearing the same clothes and a helmet

Terrified Smith screams and runs after the vehicle, which is being secretly remote controlled, but before she can reach it the bike flies over a jump.

As it lands, it explodes in a 30ft fireball.

Brittney bursts into tears and runs into the carnage to try and save her son. Atwood holds her back until the flames subside. 

When she gets to the explosion site, expecting the worst, she realizes she's been had.

The furious mom gives Atwood a sharp kick, telling him: 'It's not funny, that's not funny.

'Don't touch me, I'm done. I'm done, honey, I can't do it.'

As Smith returns, checkbook in hand, the quad revs and shoots off with the dummy onboard

As Smith returns, checkbook in hand, the quad revs and shoots off with the dummy onboard

The couple run after the vehicle -  which is being secretly controlled remotely

The couple run after the vehicle -  which is being secretly controlled remotely

But before they can reach it, the quad bike and dummy fly over a big jump into a ditch below. Atwood can be seen holding Smith back as she tried to catch up with the vehicle

But before they can reach it, the quad bike and dummy fly over a big jump into a ditch below. Atwood can be seen holding Smith back as she tried to catch up with the vehicle

The footage ends with little Kane running up to give his relieved mother a big hug while Atwood asks his girlfriend: 'You still love me, right?'

He does not get a reply.

Perhaps Brittney, 32, should have suspected something was amiss as it is not the first time her boyfriend has pretended to kill their son.  

In November last year, he tricked her into thinking he threw Kane off their balcony. Again, it was a mannequin, this time dressed in Kane's Spider-Man costume. 

Smith sentenced her boyfriend to a night of sleeping on the couch and a kick in the groin.

Atwood is known for his hidden camera prank videos, which he boasts have garnered more than 1.042billion views and 7.1million subscribers on his YouTube channel.

He started out by filming videos at high school and has been recently filming a reality prank show, called Natural Born Pranksters, with Alex and Howie Madel and can be followed on Facebook or Instagram. 

As it lands, it explodes in a 30ft ball of fire. Smith tries to save what she thinks is her son, as flames erupt into the sky but she is kept back by Atwood until the fire subsides

As it lands, it explodes in a 30ft ball of fire. Smith tries to save what she thinks is her son, as flames erupt into the sky but she is kept back by Atwood until the fire subsides

Famous internet prankster Roman Atwood has been accused of faking his latest video in which he claims to have tricked his girlfriend Brittney into believing their son Kane has been killed - for the second time 

She bursts into tears as she watches what she believes to be her toddler son go up in flames

The footage ends with Kane running out to give his relieved mother a hug while Atwood asks his girlfriend 'You still love me, right?' He does not get a reply

The footage ends with Kane running out to give his relieved mother a hug while Atwood asks his girlfriend 'You still love me, right?' He does not get a reply

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