Because the sea weed
or
Because they only know their ABCs "Anybody But Clinton".
or
Two… one to tell the engineer to do it, the other to say "I don't know, what do you think?"
or
Because an undocumented worker has been living on his head for the past 2 decades!
or
1,000,001: One to change the bulb and 1,000,000 to rebuild civilization to the point where they need light bulbs again.
or
The owner got tired of the (w)hole business!
or
Address.
or