Three - one to cast the bulb into the outer darkness, and two to catch it when it falls.
or
Cause your the only one Hair.
or
The police had to comb the area.
or
Shamboo!
Frankenstein: Witch can you make me a lemonade?
Witch: Poof you are a lemonade!
or
A car
or
One. You don't believe me do you? I've got photos! See that big blob? Well, just squint your eyes a bit. . . .
or