This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!Buzz·Posted on Jul 28, 201513 Reasons Your Sister Is Your Best FriendBFFLS. Most of the time.by SombryCommunity ContributorLinkFacebookPinterestTwitterMail 1. You have the same parent struggles Tap to play GIF Tap to play GIF 2. You share everything... most of the time 3. You have so many inside jokes Tap to play GIF Tap to play GIF 4. You share interests Tap to play GIF Tap to play GIF 5. You both hate the same people Tap to play GIF Tap to play GIF 6. You're completely comfortable around each other Tap to play GIF Tap to play GIF 7. You can be totally blunt with each other Tap to play GIF Tap to play GIF 8. You guys can have fun doing pretty much nothing Tap to play GIF Tap to play GIF 9. She can convince you to stop being bored and do something Tap to play GIF Tap to play GIF 10. You can always make each other laugh Tap to play GIF Tap to play GIF 11. You definitely understand that some days just suck Tap to play GIF Tap to play GIF 12. You are basically attatched at the hip Tap to play GIF Tap to play GIF 13. Through everything, you two mean the world to each other Tap to play GIF Tap to play GIF