Since Mr. Snuffleupagus made his first appearance in the Season 3 premiere, the adults had thought that Mr. Snuffleupagus was just an imaginary friend of Big Bird's. Big Bird would often try to arrange for them to see Mr. Snuffleupagus, face-to-face, but Snuffy would always be gone by the time they finally chose to look at him. After years of not seeing him and many near-misses, the adults finally got to see Mr. Snuffleupagus for the first time in this episode, and finally find out that he is real.