I’m a fat girl working at an opera camp for kids this week, and one of my responsibilities is to supervise the campers on the playground. While I was swinging and keeping an eye on two seven-year-old girls, one of them turned to the other and started talking about an imaginary friend. “Let’s play with her!” she said. Her real-life companion said, “No! I don’t want to."

"Why not?” asked the first girl. “She’s not fat anymore!"

Thin privilege, I’ve learned, extends even to imaginary friends and second graders.