I have now told this story about four times on here (well, on the old board too), but here we go...
I cut out a bunch of pieces for three Muppets (Elmo, Ernie, and Bert), and Emileigh assembled them with glue. Each figure is fairly large (about two feet), and I hung them all on walls of our house. Bert was the last one she made, and when she was finished, I asked her about his mouth. She said, "Oh, Bert is mad. Mad at his pal Ernie, but they are still friends." Made sense to me.