Ears have been pierced for thousands of years by everyone from indigenous people to royalty. Today, piercing and other forms of body modification are more popular than ever in the United States, with people piercing almost every body part -- even the unmentionables. We've broken down the types of adornments for the most commonly-pierced body part: the ear. Pictured here is the most basic form of ear piercing, the lobe. Click through this gallery to learn about the other kinds of holes.