Some people define a prank as putting plastic wrap on a toilet or hiding behind a door and jumping out to say 'boo'! Roman Atwood defines it as making his girlfriend think he killed their son.

In the video posted to YouTube, and has generated more than 6 million views as of Wednesday morning, Roman Atwood set up cameras and got his two sons to help him scare the pants off his long-time girlfriend Brittany Smith. The stunt called for Atwood's toddler son to wear a complete Spider-Man costume while they  played at the top of the stairs in their home.

Smith goes to grab some water and while she's away, the older son takes the little one into another room and replaces him with a dummy wearing the same Spider-Man costume as the toddler.

Once the wife comes back up the stairs, the husband asks his 'son' if he wants to fly and pretends to accidentally kicks the dummy off the balcony. Of course, like any good mother, the wife freaks out, runs to the bottom of the stairs and finds out about the switch.

"Why would you do that?!" she screams still trembling in shock (though some commenters to the YouTube video believe Smith is in on the prank).

"It's just for fun," Atwood responds as he shrugs his shoulders.

Atwood is frequently referred to as a professional pranker. He's gained internet fame from past pranks such as attaching rubber snakes to girls in public, helping the homeless with pizza parties or pretending to urinate in public. He may be best-known for a video that generated more than 52 million views when his prank backfired when he told his girlfriend he had cheated.