Sierra Club: How many (?) does it take to change a lightbulb?

How many (?) does it take to change a lightbulb? Tell us your lightbulb joke!

Change what?

Please type your joke with Question first then Answer. For example:

Q: How many puppies does it take to change a lightbulb?

A: It doesn't matter; they're so darn cute!

Question - Not Required - First Name:

Question - Not Required - State:

Question - Not Required - Enter your joke plus answer below:

(Maximum response 255 chars, approx. 5 rows of text)