"Benito Hoover made him a present of six packets of sex-hormone chewing-gum"
Sex-hormone chewing gum is used in this novel as an artificial means of gaining sexual satisfaction. It is normally consumed by men. When Brave New World
was written, chewing gum was a symbol of what Huxley saw as the attractive yet vapid American culture that was beginning to spread its influence around the world.
Click here for a brief history of chewing gum.