I used a small copper strip which you inserted behind the face plate of the phone to hold the money lever down while I stole phone time, my good man

My stepgrother used to be able to make free phone calls from the older coin phones by tapping the connector button thingies to bring the number to 0. So, for example 878 2754 would be 232 8356. I never had the dexterity to pull off the rapid sequence of taps required. This enabled me to adopt an utterly spurious air of moral superiority.