This week, we figure out why you tip both your hat and your hand, and then we take a fascinating look at why people use the seemingly illogical phrase "Yeah no."\n\nFOLLOW GRAMMAR GIRL\n\nYouTube: https://www.youtube.com/grammargirl\nTwitter: http://twitter.com/grammargirl\nFacebook: http://facebook.com/grammargirl\nPinterest: http://pinterest.com/realgrammargirl\nInstagram: http://instagram.com/thegrammargirl\nLinkedIn: https://www.linkedin.com/company/grammar-girl\n\nSPONSORS\n\nhttp://pewtrust.org/grammar (The 'After the Fact' Podcast)\nhttp://takecareof.com, promo code GRAMMAR50\nhttp://grammar.robinhood.com\n\nGRAMMAR POP iOS GAME\n\nOptimized for iPad: http://bit.ly/GrammarPopiPad\nFor iPad and iPhone: http://bit.ly/GrammarPop\n\nGRAMMAR GIRL BOOKS\n\nhttp://www.quickanddirtytips.com/grammar-girl-book-page\n\nGRAMMAR GIRL IS PART OF THE QUICK AND DIRTY TIPS PODCAST NETWORK.