It’s Just Not Cool Anymore
One of the through lines in Grease, the 1978 John Travolta and Olivia Newton-John musical, is the squelching of chewing gum. Members of the Pink Ladies, a rebellious clique of high-school girls, repeatedly appear on-screen either smoking cigarettes or chewing the confectionery. In the film, gum identifies the rule breakers: It was so core to Grease that a production designer claimed that he ordered 100,000 sticks for the actors.