Here's the same bike: father and son, same age, about 38 years apart...

Got the bikes out today and tried riding them. The boy and girl picked it up right away and left me in the dust. The son had a bit of trouble shifting, though. It's hard to get used to letting go of the handlebars to shift gears. The wife took some videos. It was quite hilarious. We got her riding one, too.
Peace, brother.