→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 →How "Dick" came to be short for 'Richard': https://youtu.be/BH1NAwwKtcg?list=PLR0XuDegDqP2Acy6g9Ta7hzC0Rr3RDS6q Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut How Did Jeans Become Popular? https://youtu.be/O1eUwpO76Pw?list=PLR0XuDegDqP3XRa-w_G0dy_aMMXj0Uq-k The Origins of the Neck Tie https://youtu.be/oThApiIH7dM?list=PLR0XuDegDqP0GESJ0DgpgTcThLJVEbFs8 In this video: The YKK stands for Yoshida Kogyo Kabushikikaisha (say that five times fast). In 1934 Tadao Yoshida founded Yoshida Kogyo Kabushikikaisha (translated Yoshida Industries Limited). This company is now the world’s foremost zipper manufacturer, making about 90% of all zippers in over 206 facilities in 52 countries. In fact, they not only make the zippers, they also make the machines that make the zippers; no word on if they make the machines that make the parts that make up the machines that make the zippers. Want the text version?: http://www.todayifoundout.com/index.php/2010/01/why-zippers-have-ykk-on-them/ Sources: http://www.howstuffworks.com/question469.htm http://www.ykkfastening.com/global/aboutus/faq/contents.html http://www.straightdope.com/columns/read/1039/what-does-ykk-mean-on-zippers