The disk-o!
or
It doesn't matter, they don't have any electricity any more.
or
The owner got tired of the (w)hole business!
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Two… one to tell the engineer to do it, the other to say "I don't know, what do you think?"
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Twenty. One to hold the bulb, two to turn the ladder, and 17 to be on the guest list.
or
I've been framed.
or