"Piercing definitely finds its way into this category," says Megan Catherall, an expert body piercer at Pricking Thumbs Piercings who has over eight years of experience in the industry.

SARTELL — For many Millennials, their first ear piercings were a memorable, coming-of-age tween moment at the local mall's discount jewelry story. For older generations, there's the scene in "Grease" ...