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 Aug 10, 201321 Ways Your Sister Is Really Your Best FriendIf you don't know, now you know.by Kayla YandoliCommunity ContributorLinkFacebookPinterestTwitterMail 1. You guys stay in on Friday nights and have movie marathons. Tap to play GIF Tap to play GIF 2. She takes you cruising in her car, while bumping music. Tap to play GIF Tap to play GIF 3. She's not hesitant to drop the truth bomb on you. Tap to play GIF Tap to play GIF 4. Your sister tells you jokes that make you laugh uncontrollably. Tap to play GIF Tap to play GIF 5. You'd rather hang out with her than your actual BFF, which proves your sister has defeated all the friends you've ever had with her coolness. Tap to play GIF Tap to play GIF 6. If you share a room, every night is a sleepover filled with crazy adventures. Tap to play GIF Tap to play GIF 7. You gals share deep dark secrets that you wouldn't want anyone else to know. Tap to play GIF Tap to play GIF 8. You go on coffee runs every morning, afternoon, and night. Tap to play GIF Tap to play GIF 9. She teaches you sick dance moves for weekend party time. Tap to play GIF Tap to play GIF 10. And when you do party together... it's legendary. 11. She's there to catch you when you fall, and wipe a tear off your face. Tap to play GIF Tap to play GIF 12. She also supports you during job interviews, and major events in your life. Tap to play GIF Tap to play GIF 13. You guys aren't ashamed to devour the heck out of yummy foods. Tap to play GIF Tap to play GIF 14. She lets you borrow clothes if you can't find the perfect outfit for a night on the town. Tap to play GIF Tap to play GIF 15. If somebody doesn't treat you right, she'll take them down. Tap to play GIF Tap to play GIF 16. When this song comes on the radio, you don't think of your BFF from school… you think of your sister instead. View this video on YouTube Via Youtube.com "With a Little Help from My Friends" by The Beatles 17. You gals take enough selfies to fill two photo album books. 18. You have inside jokes that nobody else understands. Tap to play GIF Tap to play GIF 19. She checks in with you to discuss life and make sure everything's all right. 20. Your sister likes all of your Facebook statuses and pictures when no one else does. Tap to play GIF Tap to play GIF 21. And most importantly, she'll always be there for you... when the rain starts to pour. Tap to play GIF Tap to play GIF Obviously you get into fights... Tap to play GIF Tap to play GIF ...but you quickly get over it because you can't imagine going a day without speaking. Tap to play GIF Tap to play GIF Everyone is jealous of your friendship, Tap to play GIF Tap to play GIF because nobody has the kind of sister–friend bond you two gals have. Tap to play GIF Tap to play GIF Yay for sister-friends!