We were watching Charlie Brown and Snoopy the other day when Snoopy picks out a new birdhouse for Woodstock. He had to do this because Snoopy broke Woodstock's old birdhouse. When Snoopy was shaking the birdhouse, it made Woodstock all dizzy. So, in the animation, they used little swirls over Woodstock's head to show that he was dizzy.
Brooks turned to Zach and I and laughed while he said, "Wood stock has springs coming out of his head!"