A light bulb went off.

I just think a light bulb went on.

The killer app that got the world ready for appliances was the light bulb. So the light bulb is what wired the world. And they weren't thinking about appliances when they wired the world. They were really thinking about - they weren't putting electricity into the home. They were putting lighting into the home.

Going blonde is like buying yourself a light bulb!

I am on until I am dead, like a light bulb.

The government has no business telling an individual what kind of light bulb to buy.