Seven. One to change it and the other six to sing about how good the old one was.
or
So he gave me a kite.
or
They screw millions of bulbs every day, but when it comes to your bulbs, there's no record.
or
The hundred yard dash.
or
2 years old.
Cow: "Mooooove over"
Sheep: "Naaaaaaa."
or