The actor Matt Damon has pledged to go on strike from using the toilet until every person in the world has access to clean water.

At a mocked-up press conference in a comedy Youtube video (pictured) which has already been viewed nearly 90,000 times, the film star’s pledge causes mass confusion among fake “news reporters”.

He responds to their staged questions by declaring: “Look, I implore everybody in this room, please, everybody watching at home, to just join me, say no to toilets, say yes to clean water and sanitation for all, that’s it.”

The Bourne Identity star’s stunt is designed to draw attention to the shortage of clean water around the world.

It was masterminded by clean water website water.org which Damon co-founded, aimed at changing the fact that one in eight people don’t have clean water and a quarter don’t have a toilet.