What gas weighs the least? Butane. It's a lighter fluid.
What's the difference between a hippo and a Zippo? One is really heavy and the other is a little lighter.
I stayed up all night because I couldn't figure out where the sun had gone. Then it dawned on me.
If someone is unhappy just throw a lamp at them to get them to lighten up.
I'm always confused until someone sheds light on something. That's why without the sun, I'd be in the dark.
I prefer lanterns over long books. I'm a fan of light reading.
Two guys are on a boat with three cigarettes and nothing to light them with. They threw one overboard and the boat is now a cigarette lighter.
Why did the feather, laying next to the brick, ignite? It was lighter.
The guy who had every lamp in his house stolen was delighted when it happened.
What is blue and doesn't weigh very much? Light blue.
The wise guy thought he'd fix things by turning on the lamp without a bulb. It wasn't very bright.