| Abbreviation | Definition |
|---|---|
| BJ | Brian Jacques |
| BJ | Brian Joseph |
| BJ | Brian Junior |
| BJ | Brittany Janet |
| BJ | Bruce Junior |
| BJ | Bruce, Junior |
| BJ | Bruno Junior |
| BJ | Bryan John |
| BJ | Bud Junior |
| BJ | Buddy Junior |
| BK | Bad Kid |
| BK | Bad Kitty |
| BK | Black Kitty |
| BK | Busters Kitty |
| BL | Beautiful Lady |
| BLAST | Barrington's law of Absolute Shake-up Take-Downs |
| BM | Brian Michael |
| BMW | Big Mike Williams |
| BN1 | Big Number One |
| BO | Beauregard - nickname Bo |