[header] How to deal with mean parents [title] Take a moment to calm down before talking to your parents. [step] You will not be able to get your full feelings out if you're yelling and screaming. Remember that people mirror behavior in a conversation--the louder and angrier you get, the meaner your parents will get in response. 
If you cool off and act calm, they will too. If things are really heated, try and have the conversation an hour or so after the inciting incident--don't deal with it while the " wounds " are still fresh.