I still remember (years ago now) my coworker telling
me her family stayed in a motel on a trip and her children asking her how the phone worked. They had never seen a dial phone before and when asked, tried putting their finders in and out the holes to see if that would dial.
There was a somewhat lame Kevin Kline/Tom Selleck movie, called In and Out (1997), where one of the characters is this vacuous model (Shalom Harlow), who tries using a dial phone in that manner.