Ernie hides in a museum where all the exhibits have names beginning with B. Big Bird first runs into the world's oldest letter B, who babbles on about Babylon and other B locations he's visited. Next, Big Bird comes across a painting of a banana, which unpeels to reveal the Two-Headed Monster. Big Bird even encounters Bob reading a book on a bench; not as an exhibit, but as a visitor on his way home. Just when Big Bird thinks he's searched everywhere, he's reminded that his name starts with B, and learns that Ernie's been hiding behind him the whole time.
