SLAM
The door to Shannon's room flew open, rebounding against the wall with a loud report. She started, phone slipping through her fingers, and looked up from where she lounged on her bed. She was tall and slender, hair long and blonde, wearing a snug blue crop top with fashionably ripped jeans clinging to her hips and tight white socks on her feet.
"Don't you ever knock?" she said, staring at the girl standing in the doorway, shorter and dark-haired and grinning like an idiot.