| Abbreviation | Definition |
|---|---|
| FLAB | For Life And Beyond |
| FLAMES | Friends, Love, Affair, Marriage, Enemy, Sexy love |
| FLAPS | A Magnificent Play On Words! 'Favorite Local Auto Parts Store' |
| FLAPS | Favorite Local Auto Parts Store |
| FLB | Friend Like a Brand |
| FLBP | Full Breasted People |
| FLEEK | Flawless Letting Everyone Else Know |
| FLFC | First Like First Comment |
| FLG | Fat Loudmouth Guy |
| FLM | From Last Month |
| FLMAO | F***ing Laughing My Ass Off |
| FLN | From Last Night |
| FLW | From Last Week |
| FLY | First Love Yourself |
| FLY | Forever Love Yourself |
| FM | Fight ME |
| FMA | F*** My A** |
| FMA | Formal Martial Artist |
| FMB | Fast Money Boys |
| FMB | Frontline Message Board |