| Acronym | Meaning |
| FNG | F*cking New Guy |
| FO | F*ck Off |
| FOAD | F*ck Off And Die |
| FOAF | Friend Of A Friend |
| FOAG | F*ck Off And Google |
| FOC | Free Of Charge |
| FOFL | Falling On Floor Laughing |
| FOL | Fond Of Leather |
| FOMC | Fell Off My Chair |
| FOMCL | Falling Off My Chair Laughing |
| FORD | Found On Road Dead |
| FORD | Fixed Or Repaired Daily |
| FOS | Full Of Sh*t |
| FRED | F*cking Ridiculous Electronic Device |
| FS | For Sale |
| FSBO | For Sale By Owner |
| FSR | For Some Reason |
| FSU | F*ck Sh*t Up |
| FSU | F*cking Shut Up! |
| FTASB | Faster Than A Speeding Bullet |
| FTBOMH | From The Bottom Of My Heart |
| FTF | Face To Face |
| FTF | F*ck That's Funny |
| FTFOI | For The Fun Of It |
| FTFOI | For The F*ck Of It |
| FTL | Faster Than Light |
| FTLOG | For The Love Of God |
| FTN | F*ck That Noise |
| FTR | For The Record |
| FTRF | F*ck, That's Really Funny |
| FTTB | For The Time Being |
| FTW | For The Win |
| FTW | F*ck The World |
| FU2 | F*ck You Too |
| FUBAR | F*cked Up Beyond All Recognition |
| FUBB | F*cked Up Beyond Belief |
| FUD | Fear, Uncertainty, And Disinformation |
| FUJIMO | F*ck You Jack I'm Movin' On |
| FUM | F*cked Up Mess |
| FURTB | Filled Up And Ready To Burst |
| FWB | Friends With Benefits |
| FWD | Forward |
| FWIW | For What It's Worth |
| FYA | For Your Amusement |
| FYE | For Your Edification |
| FYEO | For Your Eyes Only. |
| FYF | From Your Friend |
| FYI | For Your Information |
| FYIFV | F*ck You I'm Fully Vested |
| FYLTGE | From Your Lips To Gods Ears |