Readers, I know you're intelligent. You know the average person doesn't swallow eight spiders each year, that the Great Wall of China isn't visible from space, and that cracked knuckles don't result in arthritis. But some of your friends are probably dumb, so show them this.

Put together by C.P.G. Grey, this video debunks ten common misconceptions in rapid fire. If you know your stuff, you may not learn a great deal. But, it is entertaining and, perhaps more importantly, might make some of your stupid friends shut up about drinking eight glasses of water a day. You're welcome. [C.P.G Grey]