Rob Ford isn't afraid of ice-cold water.
In the video Ford stands in front of a 'Ford for Mayor' campaign sign as his brother, Toronto Councillor Doug Ford and Domi dump the bucket of ice water over his head.
He also calls on TV host Jimmy Kimmel, Ontario Premier Kathleen Wynne and Prime Minister Stephen Harper to do the challenge next.
Several Canadian personalities and athletes have already taken part. Here is a roundup of the best videos we've seen so far.