Big Nate by Lincoln Peirce for May 13, 1991
Nate: Dad! Look! I've come up with another brilliant cartoon idea! Nate: See? It's a comic strip starring me! I call it "Nate is Great!" Nate: It's the story of a young genius surrounded by a cast of mediocre people! Dad: You misspelled "mediocre." Nate: I did?... I mean... Yes! Right! I did!