This was an enormous cultural phenomenon that existed for decades (at least in America) and somewhat quietly has completely died off.

For anyone who might know, were prank calls as much of thing in 50s-90s Europe? Asia? Honestly don't know but it was sortof ever-present in the background of American teenage life (it was pretty likely you either were pranked or pranked someone else at some point in your adolescent life).

(Yes I realize "heavy breathing" calls are more akin to sexual harassment and on the extreme end of the "prank call" spectrum)