So they won't run out of time
None, because they keep on asking why all of the other light bulbs in the house aren't being changed at the same time.
Same time next month?
Because all of the Mexicans that can run,jump,and swim are in America!
Because their Zoos ran out of room.
TiK ToK On The Clock
Because time was always running out.
Grandparents.
Your grandparents.