Answer:
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
I am a busy worker who is a water mammal.
I am a lunch money thief
Drop me and the world will shatter. You can always find me where you empty your bladder.
I am a certain five-letter word and become shorter when you add two letters to me. What am I?
It weighs next to nothing but no one can hold it for long. What is it?