The Full form of FML is Forget My Life. This term has been used in social media networks such as Twitter, Facebook, and even in instant messaging clients and online games for years. FML is generally an offensive term and is often used by a person when he/she is in frustration. It is an acronym meaning “Forget my life.” Because of its meaning, this term should be used with care by the people in order to not offend someone who hears it. Those who are looking for a polite version of FML may wish to use it to mean “Feeling Mighty Low” or even “Funk My Life.”