Ok, here’s one for you. This is almost too painful to repeat it’s so bad. When I went to college, the university implemented at 4 digit prefix that students would use when dialing from a campus phone so they could charge long distance calls directly to their university bill. With only 9999 numbers allocated to 6000 students, it was comically simple to use a random number and make that long overdue call to mom.

Right. It lasted a month before it was scrapped.