Shawn Johnson's friends can see everything in his backpack as the 16-year-old navigates the hallways at his high school.
Johnson doesn't mind, he even encourages it by wearing a backpack made of clear plastic.
"You can tell a lot about a person by what is in their backpack," Johnson said. "Sometimes I use it to let people know what mood I'm in."
The covers of his favorite rap CDs show through the plastic....