Three:
One to write the light bulb removal program,
one to write the light bulb insertion program, and
one to act as a light bulb administrator to make sure nobody else tries to change the light bulb at the same time.
or
Do you swear to pull the tooth, the whole tooth and nothing but the tooth?
or
She was a Roman (roamin) Catholic
or
Because he never pays his debts.
or
By paying them to cheer for him during campaign events.
or