I'm old school and use pints, feet, gallons and inches etc. but my son, who is 25 talks to me in metric, which is what he was taught at school. He will say something like "it's about 50 millimeters long" and then has to hold his hands apart so that I can get a rough idea of what he is talking about.
I don't mind us going back to imperial but the kids who have been taught metric will be in the same boat as me.
