Someone researching some archives through Google Books found a reference to an early prank call – perhaps the earliest on record – in 1884.

Unless it turns out that Alexander Graham Bell didn't really want to see Watson – that he was just goofing on the guy – then the first documented prank phone call would appear to have occurred about eight years after that famous 1876 exchange … and at the expense of an undertaker in Providence, R.I.

History's first prank phone call was way back in … 1884?