Amy hadn't been quite prepared to have a conversation at Starbucks. That wasn't to say she was opposed to it, it was just something that didn't happen every day. So when she heard someone say her name, it took her a moment to register what else the woman had said.
She offered Tahani a small smile, "I did, in fact, tell them my name is Fat Amy." She shrugged a bit at this. "It's so skinny bitches can't call me fat behind my back and think they're insulting me." It was a valid reason to call herself that, at least according to Amy.
She didn't mind if people called her Fat Amy, as long as she introduced herself to them as such. "I also answer to just Amy."