“So raise a glass to teenage girls for their linguistic innovation. It expands our expressive vocabulary, giving us new words and modes of expression. Speakers may nostalgically look to a previous golden era of English, but the truth is that Shakespeare’s English is an abomination of Chaucer’s English, which is an abomination of Beowolf’s. Language is inherently unstable. It’s in a constant state of flux, made and remade—stretched, altered, broken down and rearranged—by its speakers every day. Rather than a sign of corruption and disorder, this is language in its full vitality—a living, evolving organism. NORMs may want to extract the mutation, preserve the mammoth in a block of ice. But they’re doomed. When it comes to language, the rules of natural selection apply: Evolve or perish.”