| Abbreviation | Definition |
|---|---|
| OBOTVPAAMS | One By One The Vultures Pick Away At My Sanity |
| OBQ | One Big Question |
| OBT | Ohio Bull Test |
| OBT | Out By Time |
| OBTW | Oh By The Way |
| OBTW | Oh, By The Way |
| OBW | One Best Way |
| OC | Of Course |
| OC | Out of Character |
| OC | Outrageously Cute |
| OC | Own Character |
| OCC | Out of Character Chat |
| OCD | Old Cranky Dude |
| OCP | Obsessive Compulsive Poster |
| OCS | Other Cool Stuff |
| OD | Opinion Dominatrix |
| ODB | Oh Dayum Board |
| ODB | One Dirty B***h |
| ODB | One Dirty B*tch |
| ODD | Oooo Don't Do |