I'm a Nerd?

Emily: "A boy at school called me a nerd."
Cathie: "That wasn't very nice. Why did he call you that?"
Emily: "He said that people who have glasses and are smart are nerds. Plus they will get a pimple."
Cathie: "A pimple?"
Emily: "Yep, a pimple. I don't want to get a pimple!"