The acronym "FAFO" stands for "F*** Around, Find Out." It is a slang phrase used as a warning that if someone causes trouble or acts foolishly, they will face the consequences of their actions. Essentially, it means that actions have repercussions, and when someone "f***s around," they will eventually "find out" what happens as a result.
This phrase has become popular in internet culture and social media, often used to caution or admonish others. It rose in prominence recently in political contexts, but it originated earlier and has been used in various communities, including the military and online forums.
A more polite version of FAFO can be "Fool Around, Find Out," but the core meaning remains the same: a message that messing with something or someone will lead to consequences.
