| Abbreviation | Definition |
|---|---|
| SFD | Sorry For Disturbing |
| SFE | Sorry For Everything |
| SFF | Sister Friends Forever |
| SFF | Soldiers For Freedom Forum |
| SFH | S*** From Hell |
| SFK | Striktly For Konnissuers |
| SFL | Single File Line |
| SFL | Sludge Free Life |
| SFL | Stupid For Life |
| SFMBE | Sorry For My Bad English |
| SFMIP | Sorry For Making Infuriating Problems |
| SFO | Stop Freaking Out |
| SFOM | Sweet Friends Of Mine |
| SFPF | Smoke Free Pet Free |
| SFQ | Stupid F***ing Question |
| SFSG | So Far So Good |
| SFT | So Freaking Tired |
| SFT | So Freaking True |
| SFTC | Sorry For The Confusion |
| SFTS | Sorry For The Spam |