When it comes to his activism work, Matt Damon has declared that his number one priority is... well, number one and number two.

In a humorous faux press conference for his charity water.org that has since gone viral, the actor has declared he's going on a "toilet strike" and that "until everybody has access to clean water and sanitation, I will not go to the bathroom."

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The light-hearted video was designed to raise awareness about the serious issue of the 2.5 billion people around the world who do not have access to clean water and sanitation. Matt is also planning to make appearance on several YouTube vloggers' channels to get an online conversation going about the global water shortage.

"Does anybody have any idea what invention has saved more lives than any other in the history of humankind? The toilet," said Matt. "More people have cell phones than toilets."

What do you think of Matt's viral video?

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