| Abbreviation | Definition |
|---|---|
| OMGGG | On My Goodness Gracious Grace |
| OMJ | Old Man Jenkins |
| OMONI | Omoni derives from: Omni- prefix: Omni- all; of all things. Combining forms "omniscient" having complete or unlimited knowledge, awareness, or understanding; perceiving all things. "omnicompetent" abl |
| OOTF | out of town friend |
| ORD | Only Real Dogs |
| OS | Ole Syversen |
| OT9 | Oregon's Trolley 9 |
| OTLR | Oswald the Lucky Rabbit |
| OTWB | Only The White Boys |
| OUACV | Once Upon a Christmas Village (motion picture) |
| OV | Overton Vertis |
| OYD | One Year Delay |
| P | Paige |
| PA | Father |
| PADIO | Professor Achilles De Invulnerable Overseer |
| PALD | Professionals of African and Latinx Descent |
| PAPA | father |
| PAT | Patricia |
| PBO | President Barack Obama |
| PD | Purple Ducky |