Answer:
When you put this in a heavy wooden box the box will become lighter
A town has only two barbers. One of the barbers has a nice, tidy haircut, and the other has a shaggy, messy haircut. Which barber should you go to?
What is the only question you can't answer yes to?
A train just leaves a station and enters a tunnel. Where is the best place for a claustrophobic person to sit?
How far can a man hike into the forest?
I stand in one place yet fill the whole room. I can be filled with molten rock and come in every hue. What am I?