Not actually part of a top 40 hit song, but in this week's 5/25/74 show Casey promotes an upcoming special and tells listeners "Get some batteries for your transistor", a technological reference likely to be lost on most current listeners. Today he'd probably be telling listeners to charge up their smartphones to hear it.
"When I need somebody, there's nobody to call. When they need me, my phone rings off the wall."
Huh? Why would a phone be on a wall?
Your comment reminds me of a couple of lines from Hot Stuff by Donna Summer-- Dialed about a thousand numbers lately, Almost rang the phone off the wall--and later in the song, she hopes to find somebody home. Ah yes life was so much simpler in 1979.