Telly has been instructed by Oscar, as a part of his Grouchketeer duty, to learn the word printed on his sign - "NO." Telly doesn't know what the word means and becomes frustrated by Maria, Olivia and Bob's responses (thinking they're telling him "No" in response to his question). When Oscar asks if he's learned the word yet, Telly sadly admits, "No." Oscar gives him his approval, leaving Telly befuddled. (thetvdb.com)