Trick question. Protesters never change anything.
Just one, but it takes a really long time, and the lightbulb has to want to change...
Daughter: You told me to change the baby.
A: What's a light bulb
Two! one to change the light bulb and the other to rotate the universe!
Trick Question. You can't fit 50 feminists on a bus.
Trick question. Idiots can't screw in lightbulbs regardless of help from other idiots.
Red paint.
