Answer:
People are hired to get rid of me. I'm often hiding under your bed. In time I'll always return you see. Bite me and you're surely dead.
I have legs but walk not, a strong back but work not. Two good arms but reach not. A seat but sit and tarry not.
What is as big as you are and yet does not weight anything?
There is a puzzle which can be asked all day with a different correct answer each time. What is the puzzle?
I know a word of letters three. Add two, and fewer there will be!
What did the piece of wood say when he saw the screwdriver and screws approaching?