The actor is set to co-host the Times Square celebration with Demi Lovato.
In a new promo for MTV's New Year's Eve special, via E! Online, Posey teases viewers with a night of shirtless entertainment -- while doing pushups, of course.
"This year's party is gonna be crazy," he boasts. "I hear if there's a full moon, a certain shirtless werewolf may run through Times Square naked."
When cameraman informs Posey that there won't be a full moon during the festivities, the actor quickly retorts: "Oh, he'll probably take off his shirt anyway. I hear he's been doing lot of pushups lately."
Posey is slated to co-host the special on Saturday, Dec. 31 live from Times Square with Demi Lovato. Scheduled to perform are Lovato, Selena Gomez, J Cole, Jason Derulo and Mac Miller. Switched at Birth actresses Vanessa Marano and Katie LeClerc will also make a special appearance.
Teen Wolf, currently filming its second season, is set to return in Summer of 2012.
