Do you feel that you have been bullied before? Have you done any of these things to someone else? Bullying is unacceptable behaviour which makes the person being bullied feel afraid or uncomfortable.
Check out What's Bullying here to find out more about what you can do to help stamp out bullying.
"Most bullies aren't liked, even if it starts out that way. Remember, it's best to treat others the way you would like to be treated".