A video was pasted to Bush's Facebook page on Wednesday morning, showing his wife, Laura Bush, dumping a bucket of ice water on his head as part of the ALS Ice Bucket Challenge.
Bush was answering the call of his daughter, Jenna Bush Hagar, among others.
He also extended the icy challenge to his predecessor, Bill Clinton, while also sending him a warm birthday with. Clinton turned 68 on Tuesday.
"Yesterday was Bill's birthday and my gift to Bill is a bucket of cold water," he said.
Watch the video: