A: If we change the light bulb we'll have to change everything.
A: Seven one to change and the other six to sing about how good the old one was.
Just one. He holds up the light bulb, and the world revolves around him
You don't know? That's right, you know, because you weren't there, man!
This is a joke I came up with. Q: How many religious people does it take to change a light bulb? A: There's no need to change it when you can easily convince everyone that it still works, but they've gone blind.
A: Three. One to screw it in and two more to hold down the editor.
It's over, man.