So there's this charity trend running around called Chillin 4 Charity, started by a University of Arizona basketball coach. The rules are (I think): dunk a bucket of ice water on your head; challenge 3 others to do the same; for every one that accepts, you donate $50 to the charity of their choice; for every one that doesn't THEY donate $250 to the charity of your choice.
A lot of celebrities have adopted the challenge as well, including Rachel Maddow, Shep Smith, and Martha Stewart. One of the latest is Ansel Elgort from The Fault in Our Stars. He was challenged by DJ Pierce Fulton, and has passed on the challenge to Stars author John Green, co-star Nat Wolff, and Teen Wolf star Dylan O'Brien.
I now present to you an underwear-clad, sopping wet Elgort. Enjoy!