These were added for the scene where Bart tries to think of a name for his fictional letter writer, and sees a portrait of Woodrow Wilson.The writers had originally wanted to use a picture of American football player Johnny Unitas, but were unable to get the rights to use his image for free.He creates a new adult male alter ego named Woodrow, inspired by a picture of former President Woodrow Wilson, and Mrs. Meanwhile, Ned Flanders asks Homer to cut down on his swearing, so Homer starts using a swear jar.
While snooping in her desk to take back his yo-yo, he discovers her ad, and decides to get revenge on her by responding to it as a prank.
Reiss recalls that "their eyes were as big as saucers" after hearing Homer curse.
In the background of the classroom, there are several portraits of past United States presidents.
Woodrow's voice was performed by Harry Shearer, who did an impression of Ricardo Montalbán.
The picture Bart sends Edna is of NHL and WHA star Gordie Howe.