Reality TV show's task involving donkeys was so disturbing the episode never aired

Contestants on reality TV often have to do some pretty questionable things but this one show may have taken it a touch too far.

OK, a touch too far is quite the understatement, this definitely went too far, in fact it went so far that it was never aired on television.

When Joe Rogan was the host of Fear Factor, he certainly saw contestants do some terribly awful and disturbing things.

But in this particular episode, there were two bizarre additions - donkey semen and urine... yeah, you can guess where this is going.

You can watch the clip here but your life would probably be better if you never saw it:

With that being said, if you are choosing to torture yourself with viewing, it might be best to stop eating and watch when you're alone - it would be terribly difficult to explain what you're watching if you were caught.

Fear Factor contestants were put through a procession of gross challenges in the hopes of winning a $50,000 prize and it initially ran between 2001 and 2006 before being cancelled.

It was brought back with original host Rogan in 2011 but the reality show's return was short lived after Fear Factor decided to do an episode titled 'Hee Haw! Hee Haw!' which never aired.

This particular episode featured two terrible additions - donkey semen and urine. (NBC)

In the episode, there was a task where contestants had to play a game of 'horseshoes' (throwing a horseshoe as close to a pole as possible) and the worse they did the more donkey semen and urine they had to chug.

Markings set out denoting how much each contestant would have to drink and even if they got their horseshoe really close to the pole, they'd still have to drink some of each of the disgusting substances.

The episode was ultimately never broadcast and the revival of Fear Factor was nipped in the bud shortly afterwards, with the show later getting brought back for a third run in 2017 with rapper Ludacris hosting.

Contestants who were put through the sickening challenge explained just how awful it was, with twins Brynne and Claire Odioso calling it 'the hardest 15 minutes of [their] life' in a 2012 interview.

The ex-Fear Factor host said it was 'so hard to imagine that that was a real show'. (NBC)

They said if you vomited then you had to start your drink again, with one twin revealing that she vomited in her glass and had to drink it back down.

They said it was so awful that even the cameramen were throwing up as they attempted to film the episode.

Speaking about the show on his podcast, The Joe Rogan Experience, the ex-Fear Factor host said it was 'so hard to imagine that that was a real show'.