Answer:
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
I am a house with two occupants sometimes one rarely three. Break the walls eat the boarders then throw away me.
Tear off my skin. I won't cry, but you will. What am I?
I shrink smaller every time I take a bath. What am I?
Everyone in the world needs me. They generously give me but never take me. What am I?
I flow from the Homer’s mouth when he sees doughnuts.