Videos that show distressing or dangerous pranks have been banned from YouTube
The move comes in response to so-called ‘challenges’ that have sometimes resulted in death or injury.
The Google-owned video sharing site said harmful material had ‘no place on YouTube’.
From now on, the site said it would not allow videos that featured ‘pranks with a perceived danger of serious physical injury’.
This includes pranks where someone is tricked into thinking they are in severe danger, even if no real threat existed.
YouTube unveiled updated community guidelines for creators, with a new section on dangerous challenges and pranks, clarifying its position on the behaviour.
The film Birdbox led to a craze where people attempted everyday tasks while blindfolded.
On Friday, police in Utah blamed the Bird Box challenge for a road accident.
The driver, a 17-year-old girl, covered her eyes with a beanie while she drove a pickup truck.
Last year, Monalisa Perez, 20, from Minnesota was sentenced to six months in prison after shooting dead her boyfriend, Mario Ruiz.
The couple had hoped video of their stunt, in which an encyclopaedia was meant to protect Mr Ruiz, would go viral on YouTube.