I feel old. On a tech-related mailing list to which I subscribe, there are young things who, when someone mentioned a 'party line', piped up with "A what? What's one of those?
Do you know what a party line is/was?
What are you talking about?
Did you know this without having to research it?
Did you ever have a party line?
No, but I know my parents/other relatives did
Ooh! Sounds kinky...
The youth of today...
... don't know what party lines are/were
... don't care what party lines are/were
... don't use these creaky old land-line things any more
... are too busy having parties and doing lines
... think you're a sad old git
[Edit: I should probably clarify "No, but I know my parents/other relatives did
" to include "before I was born/when I was not living there