what should we, teenagers do when parents yell at us?

  Easy. If what your parents yell at you for is reasonable and correct, then you keep your mouth shut and do what they ask you to do to make up for what you did. Apologize is important too, although most teenagers would not admit their mistakes. That is normal, just do something to make up for your mistake.
  If what your parent are yelling at you for is totally reasonable, or just want to yell at you because they are felling down, then you can talk back. Talking back is unrespectful but its the only way for parents to realize children are not punching bags where parents can release their anger on. Children have feelings too. If parents are not patient enough with their kids, then the kids won't have patience with the parents

My little personal story:
I accidentally burned a tea kettle and i did not burn down the house. I was just boiling water and playing on my PC while its boiling. I didnt hear the kettle screaming and i burned it a little bit. My parents yelled at me, saying i am clumpy, useless, etc. They compared me to my cousin, whom i hate. They say how my cousin is so much more intelligent, more obeying than i am. I got pissed. They scolded me, saying that "you could have burn the whole house down and we could have been homeless".  I learned my lesson abut they keep screaming at me like "have you learn the lesson yet?" "Do you hear me?" "Look at me!" threat is the most hateful thing in the world .

how parents should not interact with teenagers:
- always compare them to someone better
- always scold them
-impatiently teach them
-do not use old grudges against them

how parents should interact with kids:
- suggest instead of demand
- give them tiny rewards when they did something good
- patiently point out what they did wrong and teach them the right way
- give them a warning instead of yelling at them