Matt Damon is back to raise awareness for the third-annual World Toilet Day on Nov. 19. The event — the work of the World Toilet Organization — was created to inform and help the more than 2.6 billion people who live without access to proper, clean sanitation.

 

Damon, 41, is the co-founder of Water.org, which seeks to provide clean drinking water and sanitation to people in the developing world. He's a fierce advocate for the cause, traveling to areas in crisis and appearing in countless videos urging donations and support to help make a difference. "This is a challenge worthy of the next global movement," he recently wrote on The Huffington Post last year. "Similar to what was needed to sound the alarm around the fight against HIV/AIDS."

 

Like in 2011, Damon and his Water.org partner Gary White are backing the humorous "Talk Sh*t All Week" twitter campaign. Interested participants can let Water.org post a different toilet-related fact to their Twitter feed Nov. 19-24. You can also set up your own "Toilet Day Fundraiser" to help raise cash for clean water projects around the world. 

 

Check out a new "True or False" YouTube game below starring Damon to see how your fare with your sanitation knowledge: