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Jessica Biel, Jason Bateman, Water.org

Todd Williamson/Invision for Water.org

Jessica Biel and Jason Bateman are giving new meaning to the term potty mouth.

In a new PSA, the two stars, along with fellow actor Josh Gad, announce that they have joined Matt Damon's "toilet strike" in an effort to help the Oscar winner and the organization he cofounded, Water.org, raise awareness of the 2.5 billion people around the globe who do not have access to clean water and sanitation.

"It's easy for me because I've never gone to the bathroom in my entire life," Biel notes in the clip, while Bateman expresses confusion on how to proceed.

"Are we not supposed to excrete waste at all or just not in the toilet?" he asks. "I've just been using the kitchen sink."

Meanwhile, Gad simply can't contain his excitement about taking part in the strike.

"Let's get this party started!" he exclaims before chugging a beer and then regrettably adding, "That was probably a mistake."

To support Damon's "strike," go to StrikeWithMe.org.