FAFO is a slang acronym that stands for "F*** Around and Find Out." It is used to convey that actions have consequences, often as a warning or statement meaning that if someone meddles or causes trouble, they will face the results of those actions. The phrase suggests a straightforward cause-and-effect relationship, similar to sayings like "if you mess with the bull, you get the horns." Originally from African American Vernacular English (AAVE), FAFO has gained widespread popularity on social media, including TikTok, and has been used in various contexts from everyday humor to political statements. It also describes a parenting style where parents allow children to experience natural consequences for their actions rather than shielding them from outcomes. Its usage has expanded from casual slang to a phrase carrying cultural and political significance.