Pencil: I'm sorry
Eraser: For what? You didn't do anything wrong.
Pencil: I'm sorry because you get hurt because of me. Whenever I made a mistake, you're always there to erase it. But as you make my mistakes vanish, you lose a part of yourself. You get smaller and smaller each time.
Eraser: That's true. But I don't really mind. You see, I was made to do this. I was made to help you whenever you do something wrong. Even though one day, I know I'll be gone, I'm actually happy with my job. So please, stop worrying. I hate seeing you sad. :)
Our Parents are like the eraser whereas we children are the pencil. They're always there for their children, cleaning up their mistakes. Sometimes along the way they get hurt, older, and eventually pass away, they will still be proud of their children that had grown up to be independently.
So let your parents know you are thankful and grateful for their love and don't fight back when they are trying to protect you.