Only 28 here, but I love that song.....so much so that my 11 yo knows it very well too. It's a classic, so I'm guessing lots of younger somethings know it.
My Dads 50th b-day party was recently and they had karaoke, it was SO funny watching him and his best friend from the 80's sing this song!
I used to work at a large teaching hospital. The medical students weren't given pagers at that time so when you paged them the announcement went overhead throughout the medical center. At least once a week you would hear "John Smith please call 8675309" It was an automated system with an answering machine type voice.