Smart
Puns about smart.
SmarterWhich is smarter, longitude or latitude? Longitude, because it has 360 degrees.Smart PhonesThe newest smart phones, with screens that cover almost all of the front, are really top notch!Solar EnergyI imagine using the sun for solar energy is a bright idea. I can't see it happening though.LampThe wise guy thought he'd fix things by turning on the lamp without a bulb. It wasn't very bright.