Outside the Subway in historic downtown, there's a bank of light switches on the brick wall. There's really no obvious clue as to what function these switches perform, so I can only surmise it must be so the power company can come turn off your electricity if you don't pay your bill.
Of course, you could just wait until the technician's gone and switch it back on. Then, after a few days of this back and forth switching, you might get a strongly-worded note in the mail to stop flipping the switch. You, of course, continue to switch it on. At which point, you might receive a final ultimatum explaining that next time they'll use tape. You come back to find the switch held in place with electrical tape.
Yes, electrical tape...what other kind of tape would you use to cover a light switch?