Gone Girl by Gillian Flynn

"Being the Cool Girl means I am a hot, brilliant, funny woman who adores football, poker, dirty jokes and burping, who plays video games, drinks cheap beer, loves threesomes and anal sex, and jams hot  dogs and hamburgers into her mouth like she's hosting the world's biggest culinary gang bang while somehow maintaining a size 2, because Cool Girls are above all hot. Hot and understanding. Cool Girls never get angry; they only smile in a chagrined, loving manner and let their men do whatever they want...Men actually think this girl exists."