Well, not all of them.
Just one. They are very efficient and don't have much of a sense of humor.
Three, one to hold the giraffe, and one to put the clocks in the bath tub.
Just one he holds it still and the whole world revolves around him. Just one but two lawyers have to explain him how to do it.
Because we'd rather die on our feet than live on your 30.48 centimeters.