13 Things Only Siblings Understand It takes one to know one. Matthew Gustafson BuzzFeed Jr. Video Producer 1. If you have brothers or sisters, this video is definitely for you. Video available at: http://www.youtube.com/v/FihCxmQiIqw. youtube.com 2. Yup, wordless communication is definitely a thing. View this image › youtube.com 3. Want to make sure you never miss an amazing video? Sign up for the BuzzFeed Video newsletter and we’ll send you the best videos of the week every Saturday! View this embed › Check out more articles on BuzzFeed.com! More ▾ Facebook Conversations Can your pet compete? Find out now. Get BuzzFeed's Cute or Not app! Get the App!