It’s my son’s thirteenth birthday and he thinks I have gone out of fashion

I resist the urge to run screaming to the nearest exit.
It’s my kid’s birthday. Instead of mooching around my preferred retail emporiums — book shops, food shops, charity shops — I have been catapulted into the shiny, bright-lit shopping mall full of identical outlets which lines every high street in every town, where the air is sterile, the music piped, and the coffee rank. To commemorate his coming of teen-age, my son would like trainers more expensive than my car, and items that are secondary to the names on their labels.