What makes you look dumber?

Everyone in this world wants to create an impression and what other people to like them. Sometimes people end up doing things and behaving in a way which makes them look dumber than they actually are. Do not try very hard to impress someone because remember one thing that you are born to live and not to impress others. Here is a list of a few things which you should keep in mind if you don't want to look dumb in front of people.