1. When your parents tell you to do something, do it without argument or debate. The worst thing you can have is a kid doing something dangerous while arguing with you that it isn't.
2. Wash your hands, keep yourself clean, for health reasons.
3. No means no, and I don't have to debate it. Don't think whining on and on will get it for you, because if you do that in the real world, people won't want to work with you or be friends with you.