Justin Timberlake Challenges Jimmy Fallon to #ALSIceBucketChallenge

Lloyd Bishop/NBCJustin Timberlake may get his female fans -- and maybe some male fans, too -- all hot and bothered, but he was the one dumping a bucket of ice water over his head recently. 

The singer accepted a nomination from Patrick Downes and Jessica Kensky, two survivors of the Boston Marathon bombing, for the #ALSIceBucketChallenge.  Justin had 24 hours to douse himself with a bucket of ice water, or donate $100 to help find a cure for ALS, a progressive, degenerative nerve disease.  Justin and his band, The Tennessee Kids, accepted the challenge, and now he's challenging his BFF Jimmy Fallon, his Tonight Show band The Roots, and Fallon's announcer, Steve Higgins, to do the same.

"You've got 24 hours to donate AT LEAST $100 or douse yourself with ice," Justin wrote to his celeb pals. "Or both. We did both...and then we donated a bunch more. It's such a good cause. "

Fallon has yet to respond to Justin's challenge.

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