Answer:
This thing runs but cannot walk, sometimes sings but never talks. Lacks arms, has hands; lacks a head but has a face.
A hole in a pole, though I fill a hole in white. I'm used more by the day, and less by the night.
We are five little objects of an everyday sort. You will find us all in a tennis court.
A seed am I, three letters make my name. Take away two and I still sound the same.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
Why is the letter B always cool?