Surely you must've heard of the #IceBucketChallenge?
It's the phenomenon that is currently sweeping across facebook & twitter.
The challenge has raised over 48 Million in less than a month,
and many celebrities have taken part too!
The task is simple. Have a bucket of ice-cold water poured over your head, and in exchange and nominate 3 other people to take part!
The challenge is raising money for any charity supporting Amyotrophic Lateral Sclerosis (ALS or MND in the UK). The disease affects the brain and the spinal cord, causing motor neurones to degenerate, which leads to gradial paralysis and eventually death. There is currently no known cure for ALS, although the millions being raised will go towards vital research.