| Abbreviation | Definition |
|---|---|
| FMBF | Forever My Best Friend |
| FMD | F*** Me Dead |
| FMD | F*** Me Dress |
| FMG | F*** My Generation |
| FML | F*** Making Love |
| FML | F*** My Life |
| FMOG | Find Me On Google |
| FMP | F*** My Plans |
| FMR | F*** Me Right |
| FMTKFYTFO | For Me To Know, For You To Find Out |
| FMW | Funnier My Way |
| FN | Fast Note |
| Fn | Fine |
| FN | For Now |
| FN | Forum Notice |
| FNA | Forward No Answer |
| FNAF | Five Nights At Freddys |
| FNAF5 | Five Nights At Freddy's 5 |
| FNAP | For Necessary Action Please |
| FNAR | For No Apparent Reason |