In this episode, SpongeBob reads a "bad word" off a dumpster behind the Krusty Krab, but does not know what it means. Patrick explains to him that it is a "sentence enhancer" which is used "when you want to talk fancy." The two start using it in every sentence they speak, but when Mr. Krabs finds out, he is able to explain the word's purpose and warns the two never to use it again or any of the other "thirteen bad words". Later on, SpongeBob accidentally uses the word again, and Patrick runs to tell Mr. Krabs about it while SpongeBob tries to stop him. However, Mr. Krabs injures his foot, prompting him to utter all of the thirteen bad words. The two then run to Mama Krabs' house to tell on him. Mama Krabs, who is appalled by their use of the words, makes the three paint her house as punishment.