| Abbreviation | Definition |
|---|---|
| BF | Big Fat |
| BF | Big Finger |
| BF | Bisexual Female |
| BF | Bloody Fool |
| BF | Boswells Forum |
| BF | Boy friend |
| BF | BoyFriend |
| BF/GF | Best Friend/ Good Friend |
| BF/GF | Boyfriend/Girlfriend |
| BFB | Best Friends Brother |
| BFB | Brain-Fog-Brain |
| BFBFF | Best Facebook Friend Forever |
| BFC | Best Friend's Committee |
| BFC | Big F***ing Can |
| BFD | Big F*** Deal |
| BFD | Big F***ing Deal |
| BFD | Big Friggin Deal |
| BFF | Be Forever Faithful |
| BFF | Best Feline Friend |
| BFF | Best Friend Forever |