Shying away from the Titanic jokes and memes that have been floating around since the challenge went viral, the Wolf of Wall Street star took the challenge from Lake Athabasca in Canada in a video, where he's been working on an environmental project.
"Hello from Lake Athabasca, we're here learning about the Canadian tar sands. We took a moment to join the #IceBucketChallenge movement in support of the ALS Association," Leo wrote on Facebook, alongside the video. "My friends Chief Adam of the Athabasca Chipewyan First Nation challenges Dave Collyer president of Canadian Association of Petroleum Producers, Chief Courtoreille of the Mikisew Cree First Nation challenges Mark Little of Suncor Canada and The Sierra Club President Michael Brune challenges Shell CEO Ben van Beurden."
"And me? In addition to a donation from my foundation, I challenge Canadian Prime Minister Stephen Harper #StrikeOutALS," he added.
Then, standing in the middle of the four men, with a ton of people in the background, a big bucket of icw water was dumped on Leo, totally messing up his man bun.
According to JustJared.com, Leo has agreed to donate a whopping $100,000 to the ALS Association, which helps fund research for Lou Gehrig's Disease.
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Gallery | Celebs Who Have Accepted the ALS Ice Bucket Challenge