Because they had so many knights.
or
Time is fun when you're having flies
or
Just one, but he/she will spend hours checking for technical problems.
or
It takes them a long time to swallow their pride.
or
He was a baaaaaaaaad driver.
or
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