Surprisingly old words that seem contemporary

Last week I posed a question about words and phrases that are surprisingly old. Which of these were first used before 1950, and which after? The contestants were “See you later, alligator,” “No pain, no gain,” fake news, computer, blog, hipster, swag, dude, flash mob, and nerd.

Let’s start is right on the boundary, having appeared in teenage slang in the early 1950s. The teens evidently took it from Dr. Seuss: A is an imaginary creature in his 1950 “If I Ran the Zoo.” As soon as young people began to use it, adults began to deplore it, with a 1951 Newsweek article complaining that “someone who once would be called a drip or a square is now, regrettably, a nerd.” is just a more decorous insult, I guess.