Beat Generation
Kerouac introduced the phrase "Beat Generation" in 1948 to characterize a perceived underground, anti-conformist youth movement in New York. The name arose in a conversation with writer John Clellon Holmes. Kerouac allows that it was Huncke, a street hustler, who originally used the phrase "beat", in an earlier discussion with him. The adjective "beat" could colloquially mean "tired" or "beaten down" within the African-American community of the period and had developed out of the image "beat to his socks", but Kerouac appropriated the image and altered the meaning to include the connotations "upbeat", "beatific", and the musical association of being "on the beat", and "the Beat to keep" from the "Beat Generation" poem.
Counterculture of the 1960s
Even the notions of when the counterculture subsumed the Beat Generation, when it gave way to the successor generation, and what happened in between are open for debate. According to notable UK Underground and counterculture author Barry Miles, "It seemed to me that the Seventies was when most of the things that people attribute to the sixties really happened: this was the age of extremes, people took more drugs, had longer hair, weirder clothes, had more sex, protested more violently and encountered more opposition from the establishment. It was the era of sex and drugs and rock'n'roll, as Ian Dury said. The countercultural explosion of the 1960s really only involved a few thousand people in the UK and perhaps ten times that in the USA – largely because of opposition to the Vietnam war, whereas in the Seventies the ideas had spread out across the world.