Here’s one I’ve heard plenty of times. Slot machines are breaking down because people are pouring holy water into the coin slots for good luck, rusting the insides of the machines.
Slot machines aren’t being anointed with holy water, (but maybe beer by accident). If someone did pour some kind of liquid into a slot machine, it wouldn’t hurt the aluminum workings of the machine. The story probably originated years ago, when more unreliable slot machines would jam when gamblers accidentally spilled their drinks into the coin slots.