What is an aglet? Why does sunlight make some people sneeze? Ever wonder why cedar keeps moths away from clothes, why $1,000 is a grand, or why the refrigerator is so hard to open? Jeff "JJ" Johnson explains these mysteries plus the origins of the Etch-a-Sketch, hot dog, mistletoe, inline skates, and credits cards. Part of the "Wow! I Never Knew That!" series.