In the sociolinguistics of teen slang there's an absurd circle that goes like this: a group of young people find that they're using a word or phrase – let's say it's the word "zid". They don't quite know how they got to saying "zid", though some swear blind (and swearing is important) they know the kid who made up "zid". Next, they discover that nearly everyone they know seems to be saying "zid"; they're watching TV and someone from a band says "zid"; then a very slightly paunchy chatshow host says, "zid"; your dad says, "zid"; you never say "zid" ever again.
One other part of this sequence is that a journalist sticks a microphone in front of your mouth and says, "Do you say, 'zid'?"
I just about avoided that role this week,