FAFO
F*** around and find out
CensoredExample
Bryan got three years for counterfeiting
FAFO. I warned him that his luck was gonna run out
FAFO definition by Slang.net
This page explains what the acronym "FAFO" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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FAFO is a quick way to warn someone that reckless actions will lead to negative consequences. People often use it online, especially on social media, to comment on poor decisions. For example, someone might reply "FAFO" to a video of someone attempting a risky stunt and failing.
While its exact origin is unclear, some suggest biker gangs coined it in the 1980s, FAFO gained widespread use in the early 2020s. It became common in memes, social media discussions, gaming communities, and even political debates.
The phrase grew in popularity in 2022 when TikToker @rogerskaer shared a viral video explaining a humorous chart that directly links "f***ing around" to "finding out." As a result, FAFO is often accompanied by an image or GIF of this video in online conversations.
Trump FAFO Truth Social Post
FAFO achieved new heights in January 2025 when President Trump used it to represent his approach to leveraging trade tariffs on other countries. In an AI-generated image of himself in a suit and fedora he posted on Truth Social, he includes a "FAFO" sign in the background, which went viral.