Miss Hoover, another teacher, replies, "I don't know why; it's a perfectly cromulent word."

These are perfectly cromulent stories (easy, but I had to use it), but they ignore what to me is the single biggest contribution: yoink.

Later in the episode, while talking about Homer's audition for the role of town crier, Principal Skinner states "He's embiggened that role with his cromulent performance."

Cromulent" and "Embiggen", words used in "Lisa the Iconoclast", have since appeared in the Dictionary.com's 21st Century Lexicon, and scientific journals respectively. "

In O. Henry's short story "Jeff Peters as a Personal Magnet" the titular character Jeff Peters uses "Sarsaparilla" as a Perfectly Cromulent Word saying "The triumph of mind over sarsaparilla".