At school parents evening, there's a new maths teacher so while waiting to see him I ask my son what he's like.
"Like a maths teacher. Not as dull as the last one. Middle aged."
When we got to see him, he was about 30! But then... viewed chronologically, never mind from the point of view of a teenager, that is most definitely middle aged. "You start to lose all your youth when you're past 30."
More interestingly, he was wearing a tie with a bicycle pattern.