Those Disgusting Foreigners!

I have just learned that the first toothbrushes were invented by the ancient Chinese who made toothbrushes with bristles from the necks of cold climate pigs.

Most Americans did not brush their teeth until Army soldiers brought their enforced habits of tooth brushing back home after World War II. h/t: Althouse

Who said the U.S. Army never did any good? And, ahem, let's leave the discussion of the dental state of our own nation to another day.