Who wants to see Celtics dump ice water on their heads? Danny Ainge, Larry Bird and more!

Finally what you've all been waiting for.

There is this thing called the ALS (Amyotrophic lateral sclerosis) Ice Bucket challenge going on right now. It's pretty low key so I wouldn't be surprised if you haven't heard of it.

ALS is also known as Lou Gehrig's disease. It is a nerve disorder and can cause paralysis in the later stages. The NFL's Steve Gleason is famously affected by the disease. You can donate here.

Anyway, the ice bucket challenge has helped raised over a million dollars to fight ALS. We've already seen some Celtics get in on the action, but here's more.

Rajon Rondo pours ice on his head for ALS, challenges his teammates to do the same

Brad Stevens accepts the ALS Ice Bucket Challenge, asks all Celtics fans to join him

Celtics Vice President of Basketball Operations, Danny Ainge:
(This was sent out in Ainge's first and only tweet)

Celtics legend Larry Bird:

Celtics future all-star Kelly Olynyk:

Rookie Marcus Smart:

Rookie James Young:

Jeff Green: