FAFO is usually said when someone is testing limits or acting provocatively. For instance, if someone is teasing or pushing boundaries, others might respond with "FAFO" to imply that there will be consequences. It can be used jokingly or seriously depending on the situation. While common in memes, gaming chats, and social media, the phrase is confrontational and contains strong language, making it inappropriate for kids. It's best understood as a warning rather than a casual expression.
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