Don't say anything about the messages to your parents / house mate.
Ask your parents / house mate if your girl / boy friend called while you were .
You get even by not giving your parents / house mate a phone message.
Go home and cry or put it down to a learning experience.
Ask a teacher to explain the grade since you were expecting a better grade.
Rip the paper up and tell your friends how what a lousy teacher he / she is.
Say nothing and hope it does not happen again.
Tell your friend what they said hurt your feelings/
Vow to get even with your friend (e.g. say something hurtful back)
Assume there was no change.
Ask if there was any change.
Accuse your friend of ripping you off.
Let them even though you are not really comfortable with the idea.
Tell them you rather not but you would be glad to help them with their work.
Tell them you are not a cheater like them.
Have unprotected sex.
Tell them you will not have sex without protection.
Tell them you don't want to get a disease from them.
Go to the movie they suggest.
Tell them that you really want to see this other film and you are to decide together.
You see the movie they suggest but complain how stupid it was.
Smile and say the jeans are cool.
Tell them you like the jeans but suggest a different size.
Tell them the jeans make them look like a fat pig.