Smiley faces were designed in the '70s, and by the '80s has connotations with psychedelic drug culture. Still, they were a positive symbol of goodwill towards other human beings, before all the modern day parodies, as well as the advent of emoticons and emojis. They were hugely popular in T-shirt and pin form, the latter of which was satirized when stained with blood and turned into the abstract cover of Alan Moore and Dave Gibbons' seminal '80s comic masterpiece, Watchmen, as well as being satirized in the film Forrest Gump.