Seven. One to install the new bulb and six to figure out what to do with the old one for the next 10,000 years.
or
Two: One to screw you out of a fee, and the other to send you to a store where they ran out of bulbs weeks ago.
or
One in 3,000,000 has a chance of becoming a human being.
or
Actually, agents will screw in just about anything.
or