Kids today have no idea what they are.
Mine are both in their twenties now but when they were younger and in school, I told them about the joys of shiny toilet roll back in the day. I'm pretty sure they thought I was winding them up.
They also seemed a little dubious about a certain PE teacher in a Caerphilly comp who insisted on watching to make sure we all had a proper shower - yep, those really were the good old days.