Watch Some Of Your Favorite MTV Stars Do The Ice Bucket Challenge!

Tyler Posey, Maci Bookout, Whitney Port and more feel the frigid H20 to help strike out ALS.

In case this is your first time visiting the Interwebs this month, you might not be aware of the ALS Ice Bucket Challenge that's been sweeping the lives of celebrities and Average Joes and Janes alike. Essentially, it consists of some lucky folks being nominated to douse themselves in frigid H20 shortly after making a cash donation to the ALS Association — and then they challenge someone else to do the same, and so on. It's all caught on camera and usually consists of a nanosecond of nervous anticipation followed by the ice dump, followed by a yelp and/or curse word.

Some fortunate current and former MTV stars (including a ton of "Teen Wolf" casties!) were recently bestowed the ice-bucket honor. Get your sympathy shivers ready, and check out a few of our favorite clips:

Tyler Hoechlin nominates Tyler Posey, JR Bourne and Daniel Sharman

Tyler Posey nominates Holland Roden, Arden Cho and Max Carver

Holland Roden nominates Crystal Reed, Ian Bohen and Pierce Brown

Max Carver nominates Felicity Huffman

Kailyn Lowry-Marroquin nominates Maci Bookout, Chelsea Houska and Kendra Wilkinson

Kail's son Isaac nominates Mia Morales, Chase Jasinski and Aubree Houska

Maci Bookout nominates Jay Cutler, Machine Gun Kelly and Dianna Dahlgren

Whitney Port nominates everyone who watches this clip

Gregg Sulkin nominates Victoria Justice, Bella Thorne and Grant Sulkin

Stephen Colletti nominates Trey Phillips, James Lafferty and Mike Jennings

Brett Davern nominates Jillian Rose Reed

Jillian Rose Reed nominates Nikki Deloach

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