After the show became successful, Garry Marshall was approached and asked if the show could do anything that would help convince kids to read. In one episode, the Fonz realized that he would go to the library and check out a book, despite his reputation. (Said the Fonz, "Everybody is allowed to read.") That week, registration for library cards went up 500 percent.
As the Fonz's character became more popular, network executives insisted that he had to be seen combing his hair, to show his respectability. Henry Winkler argued against doing this, saying it would make the Fonz look like an ordinary hoodlum. On the spur of the moment, Winkler made up the gag where the Fonz goes to comb his hair, looks in the mirror, and shrugs as if to say, "Ayyy, my hair's perfect. I don't need to comb it!" The gag got a big laugh from the studio audience, and became a Fonzie trademark. Later in the series, Fonzie showed Richie his comb and said, "Do you know I have had this comb for nine years, and it has never once touched my hair."