HOUSTON, Aug. 20 -- Former U.S. President George W. Bush has joined a growing list of celebrities across the world to take the ice bucket challenge to help raise money for Lou Gehrig's disease and has nominated his predecessor Bill Clinton to do it next.

In a video clip posted Wednesday on Bush's Facebook page, the former president, wearing a navy blue crewneck while sitting at a table, said he was challenged by his daughter Jenna Bush Hager, among others, to take the challenge.

"To you all that challenged me, I do not think it's presidential for me to be splashed with ice water so I'm simply going to write you a check," he teased viewers.

As he wrote the check, Laura Bush appeared with a white bucket and dumped ice water over her husband's head and then said, "That check is for me. I don't want to ruin my hairstyle."

Bush then announced his nomination. "Now it's my privilege to challenge my friend Bill Clinton to the ALS Challenge," he said. "Yesterday was Bill's birthday and my gift to him is a bucket of cold water."

The online campaign challenges people to either dump a bucket of ice water over their heads or donate to support research for amyotrophic lateral sclerosis, or Lou Gehrig's disease. When a person accepts the ice bucket challenge, he or she must challenge another person to partake in the fundraising effort.

The campaign went viral throughout social media and has drawn a growing number of celebrities worldwide, includes Bill Gates, Stephen King, Christiano Ronaldo, and Lady Gaga, among others.