Cal didn't even let Erika finish her thought. As soon as Erika dissed her hair and she just kept talking and talking with her stupid sounding voice. Every single word out of this girls mouth felt like a fucking punch to the face. Every word felt like she was trying to get above her. This chick knew that Cal wasn't smart, and she was using that to her advantage. Cal kept her mouth shut as Erika kept talking and talking and making herself more and more powerful. Cal had her fist balled up at her sides. She wasn't breathing and she wasn't even thinking. 

Cal hated this girl. 

Without even thinking Cal stood up, grabbing Erika by the collar of her shirt. She forced the girl to her feet. Her eyes were filled with rage. "Fucking shut up. Shut up shut up shut up!" She started shaking her by her collar. By now she knew that she was attracting the attention of adults, but she didn't care at all. She just wanted Erika to stop talking. Some adult would have to drag her off by her neck before she let go of Erika.