TED-Ed

View full lesson: http://ed.ted.com/lessons/mysteries-of-vernacular-keister-jessica-oreck-and-rachael-teel Originally meaning a woven container, the word keister has roots all over the place. The devil's tool box? Sure. A safe? That too. So, how did it become associated with the buttocks? Jessica Oreck and Rachael Teel get to the bottom of the word keister. Lesson by Jessica Oreck and Rachael Teel, animation by Jessica Oreck.