Answer:
Add a T and I shoot through the sky. Then add an S and I multiply. What word is it?
What gets wetter as it dries?
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
The itsy bitsy teeny weeny yellow polka dot variety is quite popular.
When Iām metal or wood, I help you get home. When Iām flesh and Iām blood, In the darkness I roam.
I'm the source of all emotion but I'm caged in a white prison.