Justin Timberlake is bringing freezing back.
The pop singer accepted the viral ALS Ice Bucket Challenge from two Boston Marathon survivors. The concept is simple: Douse yourself with a bucket of ice water, and then "challenge" someone else do the same within 24 hours. If they don't, then they have to donate money to the ALS Association.
Timberlake's tour members joined him, hoisting large orange "Let's Do This" buckets over their heads, too.
And just who did JT dare to do the challenge next?
None other than his good friend Jimmy Fallon of "The Tonight Show" and the house band "The Roots."
Your move, Jimmy.