What are some things that I can do to teach my brother a lesson not to mess with me again?
user
Maybe some of these will be helpful:  

1.  Let him know that you know he messed with you, in a non-judgmental way.  Instead of saying, “I know you messed with me,” just say, “I want you to know that I know you messed with me.”  This lets him know that you’re aware of what happened, but isn’t directly condemning of his behavior.  
2.  Tell him that you’re upset about his behavior.  Tell him why you’re upset, and what you’d like him to do instead.  Remind him that what he did wasn’t cool and that you want him to be a good friend to you.  Say things like, “I know you wanted to make me mad, and that you didn’t mean to make me feel sad,
assistant
What are some things that I can do to teach my brother a lesson not to mess with me again?
user
Maybe some of these will be helpful:  

1.  Let him know that you know he messed with you, in a non-judgmental way.  Instead of saying, “I know you messed with me,” just say, “I want you to know that I know you messed with me.”  This lets him know that you’re aware of what happened, but isn’t directly condemning of his behavior.  
2.  Tell him that you’re upset about his behavior.  Tell him why you’re upset, and what you’d like him to do instead.  Remind him that what he did wasn’t cool and that you want him to be a good friend to you.  Say things like, “I know you wanted to make me mad, and that you didn’t mean to make me feel sad,
assistant
What are some things that I can do to teach my brother a lesson not to mess with me again?