One, but only if the lightbulb really to change.
Need to know ASAP.
Trick question. Idiots can't screw in lightbulbs regardless of help from other idiots.
To get to the other side!
Seven - one to actually change the bulb and six to complain that they liked the old one better.
You are fine, how am I?"
Squirrels they're the best at getting nuts out of their shells.