noun. A best friend is the person you can always count on no matter what. They are the person who will be by yourside through good and bad. They would never dream of ever changing you. They accept who you are and what you believe, but they still challenge you to be you best. A best friend isn't afraid to set you straight. A best friend never makes jokes at your expense. A best friend answers the phone when you call no matter what time it is. A best friend is the person who is by your side after you get in a car accident. They are not phased by losing other friends who talk shit about you. THey defend you to no end. A best friend is the person you have inside jokes with. They know you well enough to know how you feel. Everyone knows that you're best friends. They are the person that that has said, "do you have a problem my best friend? Well I guess that mean I have a problem with you. And you should be scared about that, very scared," atleast one time. They know when to step up and say something when you're sad, and they know when to keep distance and let you go about grieving. A best friend is the person whose shoulder you cry on when the world seems so unfair. A best friend is the person who never gets tired of reassuring you. A best friend is always there. Best friends are rare, and sometimes they are not realized for their true worth. You only have one real best friend.