Today's world is nothing like what it was in the day.
In today's world it is more along the lines of stalking the audience rather than pranking, as you tend to get that one person who is radio station personnel who makes private lives of private people who have nothing to do with them their business, by whatever means they find convenient. When they want to know where the boyfriend, a trick or shack-up is they have people making phone calls to those whose privacy they have violated, thus breaking the law. The callers either pre-empt a request on a request show, or they call and follow up their one sided conversation on request shows by repeating the conversation from their end in request form, while the air personality who sent them out in the first place goes on about a powerful person who used a secret message to the boss to get cars and trips, etc. for the personality who broke the law ten or more ways to Sunday.
Today's prank call is not the harmless tom foolery it was way back when. It's a dangerous game by people who are playing for some sort of a stake. They got caught up in it.
But they're oh so sweet and cute; apparently nobody ever taught them that there is a sweetness of character that stinks.