Once long ago, back when I was a schoolboy, dank meant a place that was disagreeably damp, musty and cold, like a cellar or a dungeon. I learned recently that nowadays it means sexy or hot. You could call a young lad—or lass—dank, and they might look quite chuffed.

That’s not the only word that’s changed. These days you can say something is dope—maybe a movie or a song or a joke—and that would be quite a compliment. When we were boys in knickers, you got called a dope if you were really stupid.