Answer:
What goes up a chimney down but can't go down a chimney up?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?
I bring light to a dark world. In a current I travel and through tunnels I am hurled. Touch me and I'll kill you. What am I?
Some try to hide some try to cheat. But time will show we always will meet. Try as you might to guess my name. I promise you'll know when you I do claim.
Why is the letter B always cool?