We have no idea why, but we're not hating. We won't question why Liam decided to channel his inner TMNT, but it totally works.
Ashley Greene nominated Liam, as he's heard saying: "Thanks, Ashley, for nominating me for the Ice Bucket Challenge," before getting a bucket tossed at him.
In a second video, he shakes off the water and says, "I'm supposed to nominate people first! I nominate Woody Harrelson, Josh Hutcherson and Matt Niven."