This is a true story.
Five years ago, a squirrel got in my house somehow and I chased it around a while. We had our Christmas tree up and he ran up in it. And to try Christmas Vacation form, he did jump out just like in the movie. I laughed at the ironic connection. Anyway, the squirrel got out of the house and I never saw it again. So every year, a squirrel ornament adorns the tree in his honor. The whole thing was funny.