You know you're getting old when you start catching yourself using the phrase, "back when I was your age...", eh?
I had to explain to children what dial-up is/was. They looked at me like I was a dinosaur for knowing a world that didn't have the convenience of modern wifi... I'm not even 30 yet but to children I might as well be 100 in their eyes lol. Though to be fair I probably gave my grandpa that same look as a child when he used to talk about his childhood.