1. When your a trust worthy,down to earth,real person
2. You know your on bestie status when that one person your always with tells your the darkest secrets,and only wants to be around you.
3. It comes from the latin root, BestFriend or BFF.
4.You know your on best status when your exactly like Killa C
Example: Damn Killa C Be On Dat Bestie Status!