FAFO

abbreviation

informal

fuck around, find out; fool around, find out

—used especially as a harsh way of saying that someone's actions will or did result in predictable and deserved negative consequences

Go ahead. FAFO.

Since a lot of them voted for the dude screwing them over do not expect empathy from me. FAFO.

—@denisonscience, on BlueSky

Note: Usage of this abbreviation originated in African American English and has since become widespread.